LIST OF PUBLICATIONS

J.C.A. BoeyensCentre for Advancement of Scholarship, University of Pretoria.

October 11, 2013

References

[1] LDC Bok and JCA BoeyensPreparation of double metal sulphides of the type AB2S4, II. Compoundsof tin.J. S. Afr. Chem. Inst., 1957 (10) 49-53

[2] LDC Bok and JCA BoeyensPreparation of double metal sulphides of the type AB2S4, III. Com-pounds of molybdenum and tantalum.J. S. Afr. Chem. Inst., 1958 (11) 17-20

[3] JCA Boeyens and FH HerbsteinMolecular Compounds and Complexes, II. Exploratory CrystallographicStudy of Some Donor-Acceptor Molecular Compounds.J. Phys. Chem., 1965 (69) 2153-2159, 4587.

[4] JCA Boeyens and FH HerbsteinMolecular Compounds and Complexes, III. The Crystal Structures ofthe Equimolar π-Molecular Compounds of Anthracene and Perylenewith Pyromellitic Dianhydride.J. Phys. Chem., 1965 (69) 2160-2176.

[5] JCA BoeyensThe Ionic Channel.Nucleon, 1965 (7) 14.

[6] JCA Boeyens and FH HerbsteinIonic Complexes of Thiourea.Nature, 1966 (211) 588-590.

[7] JCA Boeyens and HM McConnellSpin-labeled Hemoglobin.Proc. Nat. Acad. Sci., U.S., 1966 (56) 22-25.

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[8] S Ohnishi, JCA Boeyens and HM McConnellSpin-labeled Hemoglobin Crystals.Proc. Nat. Acad. Sci., U.S., 1966 (56) 809-813.

[9] HM McConnell and JCA BoeyensSpin-label Determination of Enzyme Symmetry.J. Phys. Chem., 1967 (71) 12-14.

[10] JCA Boeyens and FH HerbsteinIonic Complexes of Thiourea II. Chemical and Crystallographic Surveyand Determination of the Crystal Structures of Some RepresentativeComplexes.Inorg. Chem., 1967 (6) 1408-1425.

[11] JCA BoeyensA Free-electron Study of π-Molecular Compounds.J. Phys. Chem., 1967 (71) 2969-2974.

[12] JCA BoeyensThe Crystal Structure of the Hydrated Caesium Fluoride-ThioureaComplex.Acta Cryst., 1968 (B24) 199-202.

[13] CWFT Pistorius and JCA BoeyensPolymorphism and Melting of Sodium Cyanide and Thiocyanate to 40Kbar.J. Chem. Phys., 1968 (48) 1018-1022.

[14] GJ Kruger and JCA BoeyensThe Crystal and Molecular Structure of 1,2,3,4-Tetrabromo-1,2,3,4-diphtaloylcyclobutane.J. Phys. Chem., 1968 (72) 2120-2124.

[15] LHW Verhoef and JCA BoeyensThe Crystal Structure of the 1:4 Thallous Dihydrogen Phosphate-Thiourea Complex.Acta Cryst., 1968 (B24) 1262-1266.

[16] JCA BoeyensThe Structure of the 1:4 Caesium Chloride-Thiourea Complex.Acta Cryst., 1968 (B24) 1191-1194.

[17] GJ Kruger and JCA BoeyensThe Crystal Structure and Chemical Bonding in the 1:4 RubidiumIodide-Thiourea Complex.J. S. Afr. Chem. Inst., 1968 (21) 136-143.

[18] GJ Kruger and JCA BoeyensThe Crystal and Molecular Structure of the Potassium salt of 2,2,5,5-tetramethyl-3-carboxypyrroline-1-oxyl.Proc. Nat. Acad. Sci. U.S, 1968 (61) 422-428.

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[19] JCA Boeyens and G GafnerCalculation of the Madelung Energy of Ionic Thiourea Complexes.J. Chem. Phys., 1968 (49) 2435-2438.

[20] JCA BoeyensStability of the Alkali Fluoride and Chloride Complexes of Thiourea.J. Chem. Phys., 1968 (49) 5200-5201.

[21] LHW Verhoef and JCA BoeyensThe Crystal Structure of the 1:4 Thallous Benzoate-Thiourea Complex.Acta Cryst., 1969 (B25) 607-611.

[22] CWFT Pistorius, JCA Boeyens and JB ClarkPhase diagrams of NaBF4 and NaClO4 to 40 kbar and the crystal-chemical relationship between the structures of CaSO4, AgMnO4, BaSO4

and high-NaClO4.High Temp.-High Press., 1969 (1) 41-52.

[23] JCA Boeyens and G GafnerDirect Summation of Madelung Energies.Acta Cryst., 1969 (A25) 411-414.

[24] J Smuts, JGD Steyn and JCA BoeyensThe Crystal Structure of an Iron Silicate Iscorite.Acta Cryst., 1969 (B25) 1251-1255.

[25] JP Roux and JCA BoeyensThe Crystal Structure of the 1:2 Sodium Bromide-Diacetamide Com-plex.Acta Cryst., 1969 (B25) 1700-1703.

[26] JP Roux and JCA BoeyensThe Crystal Structure of the 1:2 Potassium Iodide-Diacetamide Com-plex.Acta Cryst., 1969 (B25) 2395-2400.

[27] CWFT Pistorius and JCA BoeyensCrystallographic Aspects of the Polymorphism of Silver Chromate andSelenate at High Pressures and Temperatures.Z. Anorg. Allg. Chem., 1970 (372) 263-267.

[28] JP Roux and JCA BoeyensThe Crystal Structure of the 1:4 Calcium Bromide-Diacetamide Com-plex.Acta Cryst., 1970 (B26) 526-531.

[29] JCA Boeyens and GJ KrugerRemeasurements of the Structure of Potassium-2,2,5,5-tetramethyl-3-carboxypyrroline-1-oxyl.Acta Cryst., 1970 (B26) 668-672.

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[30] J Mitchell and JCA BoeyensThe Crystal Structure of the 1:4 Thallous Chlorate-Thiourea ComplexActa Cryst., 1970 (B26) 1121-1124.

[31] JCA BoeyensCrystal Chemistry of the Ionic Thiourea Complexes.Acta Cryst., 1970 (B26) 1251-1259.

[32] CS Erasmus and JCA BoeyensCrystal Structure of the Praesodymium β-diketonate of 2,2,6,6-tetramethyl-3,5-heptanedione, Pr2(thd)6.Acta Cryst., 1970 (B26) 1843-1854.

[33] JCA BoeyensIonic Interactions in Volatile Lanthanide Chelates.J. Chem. Phys., 1971 (54) 75-78.

[34] CS Erasmus and JCA BoeyensCrystal and Molecular Structure of tris(2,2,6,6-tetramethyl-3,5-heptanedionato)aquodysprosium(III), Dy(thd)3H2O.J. Cryst. Mol. Struct., 1971 (1) 83-91.

[35] JPR de Villiers and JCA BoeyensThe Crystal and Molecular Structure of the Hydrated PraeseodymiumChelate of 1,1,1,2,2,3,3-heptafluoro-7,7-dimethyl-4,6-octanedione,Pr2(fod)62H2O.Acta Cryst., 1971 (B27) 692-702.

[36] J Coetzer and JCA BoeyensCrystal and Molecular Structure of bis(2,2,6,6-tetramethyl-heptane-5-thiol-3-onato)nickel(II).J. Cryst. Mol. Struct., 1971 (1) 277-283.

[37] JCA Boeyens and JPR de VilliersCrystal Structure of tris(1,1,1,2,2,3,3-heptafluoro-7,7-dimethyl-4,6-octanedionato)aquolutetium(III), Lu(fod)3H2O.J. Cryst. Mol. Struct., 1971 (1) 297-306.

[38] EC Reynhardt and JCA BoeyensCrystal Structure of the Four-layer Orthorhombic Polytype of PotassiumHexacyanocobaltate(III).Acta Cryst., 1972 (B28) 524-529.

[39] JPR de Villiers and JCA BoeyensCrystal Structure oftris(2,2,6,6-tetramethyl-heptane-2,5-dionato)Erbium(III).Acta Cryst., 1972 (B28) 2335-2340.

[40] DJJ van Rensburg and JCA BoeyensThe Crystal Structure of Ammonium Tetrafluoroborate IV at 140◦K.J. Solid State Chem., 1972 (5) 79-84.

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[41] JCA Boeyens and JPR de VilliersCrystal Structure of the Basic Erbium Tetramethyl-heptane-dionate,Er8O(thd)10(OH)12.J. Cryst. Mol. Struct., 1972 (2) 197-211.

[42] JCA BoeyensElectrostatic Calculation of Bond Energy.J. S. Afr. Chem. Inst., 1973 (26) 94-105.

[43] LE Pope and JCA BoeyensCrystal Structures of S-benzylisothioronium hexachloroplatinate(IV)and tetrachloroaurate(III).J. Cryst. Mol. Struct., 1975 (5) 47-58.

[44] PH van Rooyen and JCA BoeyensSodium Thiocyanate.Acta Cryst., 1975 (B31) 2933-2934.

[45] JPR de Villiers and JCA BoeyensCrystal Structure of a Calcium Sulfate-Urea Complex.J. Cryst. Mol. Struct., 1975 (5) 215-226.

[46] JCA Boeyens, GJ McDougall and JvanR SmitCrystallographic Study of theAmmonium/Potassium 12-Molybdophosphate Ion-exchange System.J. Solid State Chem., 1976 (18) 191-199.

[47] LE Pope and JCA BoeyensBis(2,2,6,6-tetramethylheptane-5-thiolo-3-onato)Palladium (II).Acta Cryst., 1976 (B32) 1599-1601.

[48] HG Raubenheimer, JCA Boeyens and S LotzSulphur-containing Metal Complexes I. Reactions of Pentacarbonyl (car-bene) Complexes with Dialkyl Sulphides.J. Organomet. Chem., 1976 (112) 145-153.

[49] JCA BoeyensCrystal Structure of 8-quinolinol-7-sulfonic acid monohydrate.J. Cryst. Mol. Struct., 1976 (6) 23-29.

[50] JCA Boeyens and R HaegeleOxygen as a di-µ-peroxo bridge : Synthesis and crystal structure ofbenzyltrimethyl-ammonium-di-µ-peroxohexachlorodiuranyl(VI).Inorg. Chem. Acta, 1976 (20) L7.

[51] JA Pretorius and JCA BoeyensCrystal structure ofcis-bis[1-(2-thienyl)-4,4,4-trifluoro-1,3-butanedionato]-bis (4-methylpyridine)nickel(II).J. Cryst. Mol. Struct., 1976 (6) 169-176.

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[52] JCA Boeyens and RH LemmerA Valence-bond study of dialkalis and alkali hydrides.J. S. Afr. Chem. Inst., 1976 (29) 120-131.

[53] HL Alberts and JCA BoeyensThe elastic constants and distance dependence of the magnetic interac-tions of Cr2O3.J. Magn. and Magn. Mat., 1976 (2) 327-333.

[54] JCA BoeyensCrystal and molecular structure of 6,6-butyl-1,2-napthoquinone-1-oxime.J. Cryst. Mol. Struct., 1976 (6) 217-222.

[55] JCA Boeyens and RH LemmerValence bond studies. Part 2. Diatomic compounds of copper, silver andgold.J.C.S. Faraday Trans.II, 1977 (73) 321-326.

[56] R Haegele and JCA BoeyensCrystal structure of benzyl-tetramethylammonium-µ2-peroxo-bis[trichloro-dioxouranate(VI)], a binuclear complex containing dioxygenin µ2-peroxo linkage.J.C.S. Dalton, 1977, 648-650.

[57] JCA Boeyens and JA PretoriusX-ray and neutron diffraction studies of the hydroquinone clathrate ofhydrogen chloride.Acta Cryst., 1977 (33) 2120-2124.

[58] JA Pretorius and JCA BoeyensThe crystal structure ofbis[1-(2-thienyl)-4,4,4-trifluoro-1,3-butanedionate]copper(II).S. Afr. J. Chem., 1977 (30) 153-160.

[59] A Dippenaar, CW Holzapfel and JCA BoeyensCrystal structure of the metal complexes of viridamine.S. Afr. J. Chem., 1977 (30) 161-168.

[60] JCA Boeyens, AJ Brink, RH Hall, A Jordaan and JA PretoriusX-ray structure of two analogues of the carbohydrate moiety of the poly-oxins.Acta Cryst., 1977 (B33) 3059-3066.

[61] JCA BoeyensUse of centric projections in direct methods.Acta Cryst., 1977 (A33) 863-864.

[62] A Dippenaar, CW Holzapfel and JCA BoeyensCrystal structure of copper bis(tenuazonate)monohydrate.J. Cryst. Mol. Struct., 1977 (7) 189-197.

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[63] HL Alberts and JCA BoeyensOn the lattice parameters of Cr2O3 through the Neil temperature.Tydskr. Nat. Wet., 1978 (18) 32-40.

[64] CF Garbers, HSC Spies, HE Visagie, JCA Boeyens and AA ChalmersElectrophilic addition of dichloromethylmethyl ether to dienes. A newannulating procedure.Tetrahed. Lett., 1978, 81-84.

[65] JCA Boeyens, AJ Brink and A JordaanFluorinated branched-chain sugars with carbonyl-methylene-tri-phosphorane.S. Afr. J. Chem, 1978 (31) 7-13.

[66] JA Pretorius and JCA BoeyensStructural aspects of synergistic extraction. Part 2 : The crys-tal structures of cis-bis[1-(2-thienyl)-4,4,4-trifluoro-1,3-butane-dionato]-bis(4-methylpyridine)Co(II), Cu(II) and Zn(II).J. Inorg. Nucl. Chem., 1978 (40) 407-416.

[67] JCA Boeyens, AJ Brink and A JordaanAldol condensation during sodium borohydride reduction of a furanosu-loside. X-ray structure of the reduced aldol product.J. Chem. Res., 1978, 2437-2468.

[68] JCA Boeyens, EB Rathbone and GR WoolardSynthesis and crystal structure of 7-Acetamido-6,7,8-trideoxy-1,2:3,4-di-O- isopropylidene-α-D-glycero-D-galacto-octo-pyranose.Carbohyd. Res., 1978 (62) 39-47.

[69] JA Pretorius and JCA BoeyensStructural aspects of synergistic extraction. Part 3. The crys-tal structure of cis-bis[1-(2-thienyl)-4,4,4-trifluoro-1,3-butane-dionato]-bis(methanol)Co(II) and Zn(II).J. Inorg. Nucl. Chem., 1978 (40) 1519-1528.

[70] JCA Boeyens, JR Bull and A TuinmanSteroidal analogues of unnatural configuration. Part 12. Ring A reac-tions of 9-methyl-5β,9β,10 and 9-methyl-5,9β,10-estran-3-ones : Con-formational analysis and X-ray crystallography of products.J.C.S. Perkin I, 1978, 808-817.

[71] JCA Boeyens, J Burger, JJ Dekker and L FourieThe crystal structure of two bird-cage compounds derived from penta-cyclo[6,2,2,02,7,05,9]dodecane.S. Afr. J. Chem., 1978 (31) 101-106.

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[72] JA Pretorius and JCA BoeyensStructural aspects of synergistic extraction. Part IV. Crystal structuresof the pyridine adducts of the Co(II), Ni(II), Cu(II) and Zn(II) com-plexes of theonyl-trifluoroacetate and of trifluoroacetate and their ex-traction properties.J. Inorg. Nucl. Chem., 1978 (40) 1745-1763.

[73] GJ McDougall, RD Hancock and JCA BoeyensEmpirical force-field calculations of strain-energy contributions to thethermodynamics of complex formation. Part I. The difference in stabilitybetween complexes with five- and six-membered rings.J.C.S. Dalton Trans., 1978, 1438-1444.

[74] JCA BoeyensValence-bond studies. Part 3. Calculation of atomic radii.S Afr. J. Chem., 1978 (31) 121-123.

[75] JCA BoeyensThe conformation of six-membered rings.J. Cryst. Mol. Struct., 1978 (8) 317-320.

[76] JCA Boeyens, MJ Nolte and GR WoolardSynthesis and crystal structure of 7-Acetamido-7,8-dideoxy-1,2:3,4-di-O- isopropylidene-β-L-threo-D-galacto-octo-pyranose and7-Acetamido-6-O-acetyl-7,8-dideoxy-1,2:3,4-di-O-isopropylidene-β-D-erythro-D-galacto-octopyranose.Carbohyd. Res., 1979 (70) 103-115.

[77] RF Bond, JCA Boeyens, CW Holzapfel and PS SteynCyclopiamines A and B, Novel oxindole metabolites of penicilium cy-clopium Westling.J.C.S. Perkin I, 1979, 1751-1761.

[78] JCA Boeyens, RD Hancock and GJ McDougallEmpirical force-field calculations of strain-energy contributions to thethermodynamics of complex formation. Part II. Further calculations onfive- and six-membered rings.S. Afr. J. Chem., 1979 (32) 23-26.

[79] JCA Boeyens, JR Bull, A Tuinman and PH van RooyenSteroidal analogues of unnatural configuration. Part 14. Conformationalanalysis of 4,4,14-trimethyl-19(10→9β)abeo-5β,10-pregnane- 6,11-diolsby X-ray crystallography and force-field calculations.J.C.S. Perkin II, 1979, 1279-1287.

[80] JCA BoeyensValence-bond studies. Part 4. Electron pair bonds.S. Afr. J. Chem., 1980 (33) 14-20.

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[81] JCA Boeyens, JR Bull and PH van RooyenSynthesis and conformational analysis of 5,10-isomers of 17β-acetoxy-5-methylestran-3-one.S. Afr. J. Chem., 1980 (33) 45-50.

[82] JCA BoeyensValence-bond studies. Part 5. Analytical wave functions and Heitler-London integrals for electron-pair bonds.S.Afr. J. Chem., 1980 (33) 63-65.

[83] JCA BoeyensValence-bond studies. Part 6. Calculation of bond angles.S. Afr. J. Chem., 1980 (33) 66-70.

[84] IK Boessenkool and JCA BoeyensIdentification of the conformational type of seven-membered rings.J. Cryst. Mol. Struct., 1980 (10) 11-18.

[85] RR Arndt, IK Boessenkool, GJ Lourens and JCA BoeyensSynthesis and crystal structure of methyl-3,6-epimino-4-C-nitro-methyl-N-tosyl-2,3,6-trideoxy-D-arabinohexo- pyranoside.S.Afr. J. Chem., 1981 (34) 1-7.

[86] JCA BoeyensMultiple bonding as a screening phenomenon.J. Cryst. Spectr. Res., 1982 (12) 245-254.

[87] JCA Boeyens, EW Neuse and DC LevendisRedetermination of the structure of biferrocene.S. Afr. J. Chem., 1982 (35) 57-59.

[88] DC Levendis, JCA Boeyens and EW NeuseThe crystal and molecular structure of biruthenocene.J. Cryst. Spectr. Res., 1982 (12) 493-506.

[89] DC Levendis and JCA BoeyensForce-field study of ring orientation in metallocenes.S. Afr. J. Chem., 1982 (35) 144-152.

[90] JCA Boeyens, MU Naude and GW PeroldStereochemistry and phenol-dienone-phenol interconversions in theconocarpin series.S. Afr. J. Chem., 1982 (35) 157-160.

[91] SB Bautz, NF Blom, JCA Boeyens and JP MichaelUmpolung of propiolate reactivity in 1,3-dipolar cyclo-addition.S. Afr. J. Chem., 1982 (35) 166-170.

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[92] SM Hart, JCA Boeyens and RD HancockMixing of states and the determination of ligand field parame-ters. Electronic spectrum and crystal structure of bis(1,7-diaza-4-thia-heptane)nickel(II) perchlorate.Inorg. Chem., 1983 (22) 982-986.

[93] GW Harris, MO Albers, JCA Boeyens and NJ CovilleMetal dimers as catalysts. 5.Catalytic synthesis of [(η6-C6H5CO2Me)Cr-(CO)2(CNR)] and the crys-tal and molecular structure of [(η6-C6H5CO2(CN-t-Bu)].Organomet., 1983, 609-614.

[94] JCA BoeyensAnalysis of disorder by force-field calculation. The crystal structure of1,4,7,11-tetraazacyclotetradecane (Isocyclam) perchlorate,C10H24N4-Ni(ClO4)2.Acta Cryst., 1983 (C39) 846-849.

[95] SM Hart, JCA Boeyens, JP Michael and RD HancockStability, electronic spectra and structure of transition metal ion com-plexes of a novel mixed-donor (nitrogen-sulphur) macrocycle.J.C.S. Dalton Trans., 1983, 1601-1606.

[96] JCA Boeyens, JLC Marais and GW PeroldThe occurrence and crystal structure of 1,5-anhydro-d-glucitol in protea

spp.Phytochem., 1983 (22) 1959-1960.

[97] JCA BoeyensOn the theory of electron-pair bonds.Specul. Sci. Techn., 1983 (6) 323-326.

[98] GW Harris, JCA Boeyens and NJ CovilleCatalytic synthesis of (η5-C5-H5)Mn(CO)2(CNR) complexes and the

crystal and molecular structure of (η5-C5H5)-Mn(CO)2(CNBut).

J.Organomet. Chem., 1983 (255) 87-94.

[99] GW Harris, JCA Boeyens and NJ CovilleStructure of dimethylisonitriletricarbonyl iron(0): Fe(CO)3(CNCH3)2.Acta Cryst., 1983 (C39) 1180-1182.

[100] JCA Boeyens and DJ LedwidgeA bond-order function for metal-metal bonds.Inorg. Chem., 1983 (22) 3587-3589.

[101] MJ van der Merwe, JCA Boeyens and RD HancockOptimum ligand hole-sizes for stabilizing nickel(III). The structure ofthe Ni(III) complex of 1,4,7-triazacyclononane-N,N′,N′′-triacetate.Inorg. Chem., 1983 (22) 3489-3490.

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[102] JCA Boeyens, RD Hancock and VJ ThomCrystal structure of the Ni(ClO4)2 complex of the mixed donor macro-cycle, 9-ane-N2O: Resolution of disorder by force-field calculation.J. Cryst. Spectr. Res., 1984 (14) 261-268.

[103] JCA Boeyens and CC FoxCrystal structure of the Ni(II) tetraphenylborate complex of1,5-diazacyclooctane (DACO) and dimethylsulphoxide (DMSO),Ni[(C6H5)4B]2(N2C6H14)2(C2 H6SO)2.S. Afr. J. Chem., 1984 (37) 1-4.

[104] DA Baldwin, JCA Boeyens, RG Copperthwaite, JHN Loubser and AJMarkwellCrystal and molecular structure ofdiaquo bis(1,1-dimethyl-2-2′-diimidazolylsulphide)copper(II) methylsul-phate, (C8H10N4S)2(CH3OSO3)2.J. Cryst. Spectr. Res., 1984 (14) 157-167.

[105] JCA Boeyens, L Denner and JP MichaelIntramolecular hydrogen bonding between nitro and hydroxy groups ina norbornyl system: A crystallographic and spectroscopic investigation.J.C.S. Perkin II, 1984, 767-770.

[106] EW Neuse, R Loonat and JCA BoeyensThe mono- and bis-(trichloroacetic acid)-solvates offerricenium trichloroacetate.Trans. Met. Chem., 1984 (9) 12-17.

[107] JCA Boeyens, PC Lalloo, EW Neuse and HH WeiA reinvestigation of the ferrocene oxidation by iron(III) chloride in 2-butanone/ethanol.S. Afr. J. Chem., 1984 (37) 32-34.

[108] JCA Boeyens, CC Fox and RD HancockRefinement of the structure of the nickel perchlorate complex of 1,4-diazacyclooctane, [Ni(DACO)2](ClO4)2·2H2O by empirical force-fieldmethods.Inorg. Chim. Acta., 1984 (87) 1.4.

[109] JCA Boeyens and DC LevendisStatic disorder in crystals of the anthracene-tetracyanobenzene chargetransfer complex.J. Chem. Phys., 1984 (80) 2681-2688.

[110] VJ Thom, JCA Boeyens, GJ McDougall and RD HancockOrigin of the high ligand field strength and macrocyclic enthalpy incomplexes of nitrogen-donor macrocycles.J. Am. Chem. Soc., 1984 (106) 3198-3207.

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[111] JCA Boeyens, L Denner and JP MichaelX-ray Crystallographic Evidence of Intermolecular Hydrogen Bonding,including a Bifurcated Hydrogen Bond between Nitro and Hydroxygroups in two 3-Chloro-6-nitrobicyclo[2.2.1]heptan-2-ols.J.C.S. Perkin II, 1984, 1569-1573.

[112] JCA BoeyensThe Structure Factor (Review).S. Afr. J. Chem., 1984 (37) 143-148.

[113] JCA Boeyens, NJ Coville and K SoldenhoffMetal dimers as catalysts. Part 7.The reaction between [η5-C5H5)Ru(CO)2X] (X=Cl,I) and isonitriles,

and the crystal and molecular structure of [η5-C5H5)-Ru(CNBut)2I].

S. Afr. J. Chem., 1984 (37) 153-160.

[114] JCA Boeyens, FDB Khan and EW NeuseX-ray structure analysis and spectroscopic characterization ofdiferricinium-µ-oxo-bis[trichloroferrate(III).S. Afr. J. Chem., 1984 (37) 187-192.

[115] JP Michael, NF Blom and JCA BoeyensRearrangement and Participation Reactions occurring during theBromonation of 7-Trimethylsilylnitro-norbornanes. Evidence for a Dis-crete Carbocation β to Silicon.J.C.S. Perkin II, 1984, 1739-1743.

[116] VJ Thom, CC Fox, JCA Boeyens and RD HancockMolecular mechanics and crystallographic study of hole sizes in nitogen-donor tetraaza macrocycles.J. Am. Chem. Soc., 1984 (106) 5947-5955.

[117] DJ Robinson, GW Harris JCA Boeyens and NJ Coville

A structural and kinetic investigation of the isomers of M2(CO)8(NBut)2

(M=Mn, Re)J.C.S. Chem. Comm., 1884, 1307-1308.

[118] MO Albers, JCA Boeyens, NJ Coville and GW HarrisSynthesis and Crystal Structure oft-butylisocyanide-nonacarbonyldirhenium(0), Re2(CO)9(CNBu

t).J. Organomet. Chem., 1984 (260) 99-104.

[119] DC Levendis and JCA BoeyensAnalysis of the molecular conformation and rotational disorder in crys-talline ferrocene and nickelocene.J. Cryst. Spectr. Res., 1985 (15) 1-17.

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[120] MJ van der Merwe, JCA Boeyens and RD HancockCrystallographic and thermodynamic study of metal ion size selectivityin the ligand 1,4,7-triazacyclononane-N,N′,N′′-triacetate.Inorg. Chem., 1985 (24) 1208-1213; 2590.

[121] GW Harris, JCA Boeyens and NJ CovilleSystematic substitution of [Re2(CO)10−n(CNR)n] complexes (n=1, R=t-Bu; n=2,4, R=2,6-Me2C6H3; n=3, R=Me).Organomet., 1985 (4) 914-922.

[122] JCA Boeyens, FA Cotton and S HanMolecular mechanics of low bond order interactions in tetrakis (carboxy-lato) dimetal systems.Inorg. Chem., 1985 (24) 1750-1753.

[123] JCA Boeyens and DC LevendisRotational disorder in crystalline pyrene as a model for layered aromaticstructures.J. Chem. Phys., 1985 (83) 2368-2372.

[124] JCA Boeyens, AGS Forbes, RD Hancock and K WieghardtCrystallographic study of the low-spin iron(II) and iron(III) bis com-plexes of 1,4,7-triazacyclononane.Inorg. Chem., 1985 (24) 2926-2931.

[125] JCA Boeyens, SM Dobson and RD HancockThe structure of bis(1-thia-4,7-diazacyclononane)copper(II) nitrate andbis(1,7-diaza-4-thiaheptane)copper(II) nitrate. A different conformationfor the coordinated macrocycle.Inorg. Chem., 1985 (24) 3073-3076.

[126] JCA BoeyensMolecular mechanics of high-order bonds.Inorg. Chem., 1985 (24) 4149-4152.

[127] JCA BoeyensMolecular mechanics and the structure hypothesis.Structure and Bonding, 1985 (63) 65-101.

[128] GW Harris, JCA Boeyens and NJ CovilleThe palladium-catalyzed reaction between [Re2(CO)10] andphosphines and the crystal and molecular structure of diaxial[Re2(CO)8(PMe2PH)2].J.C.S. Dalton, 1985, 2277-2281.

[129] JCA Boeyens, L Denner, H Kolodziej, D Ferreira and DG RouxCrystal structure and absolute configuration of (-)-3-O-acetyl-6-bromo-3′,4′,5,7-tetra-O-methyl-epicatechin, a reference compound for the aro-matic bonding position of 2,3-cis-procyanidins.J.C.S. Perkin II, 1986, 301-303.

13

[130] JCA Boeyens and DC LevendisSimulation of molecular reorientation in crystals.Comp. Phys. Comm., 1986 (39) 221-231.

[131] JCA Boeyens and DC LevendisDisorder in crystals of the perylene-pyromellitic dianhydride complex.J. Chem. Phys., 1986 (84) 3986-3992.

[132] JCA Boeyens, DC Levendis, MI Bruce and ML WilliamsThe crystal structure of osmocene, Os(η-C5H5)2.J. Cryst. Spectr. Res., 1986 (16) 519-524.

[133] DA Baldwin, JCA Boeyens, L Denner and AJ MarkwellThe crystal and molecular structure of bis(µ-chloro)bis[chloro-(1,1′-dimethyl-2,2′-diimidazolylsulphide)copper(II).J. Cryst. Spectr. Res., 1986 (16) 763-773.

[134] JCA BoeyensHolism and ChemistryS. Afr. J. Sci., 1986 (82) 361-363.

[135] JS Field, RJ Haines, E Minshall, CN Sampson, J Sundermeyer, CCAllen and JCA BoeyensHalogenation and stepwise decarboxylation of diphosphazane-bridgedderivatives of iron and ruthenium nonacarbonyl. Crystal structures

of [Fe2I(CO)5µ-(MeO)2][PF6] and [Ru2(µ-I)I(CO)3µ-(PriO2)2PN(Et)P

(OPri)2.J. Organomet. Chem., 1986 (309) C21-C25.

[136] JCA Boeyens, L Denner AS Howard and JP MichaelTris(2-pyrrolidene)hydrogen tribromide: Crystal structure and hydro-gen bonding characteristics.S. Afr. J. Chem., 1986 (39) 217-220.

[137] JCA Boeyens, L Denner, JLC Marais and B StaskunAction of alkaline sodium hypochlorite on a 1,2,3,4-tetrahydro-9-(10H)-acridone: X-ray structure of a novel vicinal cis-diol product.S. Afr. J. Chem., 1986 (39) 221-223.

[138] JCA Boeyens, L Denner, SW Orchard, I Rencken and B RoseCrystal structures of the cis,cis-1,5-cyclooctadiene complexes of CuCland RhCl.S. Afr. J. Chem., 1986 (39) 229-232.

[139] JCA Boeyens, L Denner and JP MichaelThe synthesis, crystal structure and hydrogen bonding characteristics of2,6[(1R∗,3S∗)-1-nitrotricyclo(2.2.1.02,6]heptan-3-ol.S. Afr. J. Chem., 1986 (39) 233-237.

14

[140] CE Allenspach-Wasser, JCA Boeyens and L DennerThe conformation of cycloalkynes.S. Afr. J. Sci., 1986 (82) 563-565.

[141] GJ Hutchings and JCA BoeyensEffect of iron manganese oxide solid solutions on selectivity for lowerhydrocarbons from carbon monoxide hydrogenation.J. Catalysis, 1986 (100) 507-511.

[142] MO Albers, DC Liles, DJ Robinson, A Shaver, E Singleton, MBWiege,JCA Boeyens and DC LevendisChemistry of Cyclopentadienyl-Ruthenium and -Osmium Complexes. 3.New High-Yield Syntheses of Ruthenocenes and Osmocenes. The Crystaland Molecular Structures of Decamethylruthenocene [Ru(η5-C5Me5)2]and Decamethylosmocene [Os(η5-C5Me5)2].Organometallics 1986 (5) 2321-2327.

[143] CC Allen, JCA Boeyens and EW NeuseCrystal structure of the trichloroacetic acid-solvated ferricinium.S. Afr. J. Chem., 1987 (40) 17-19.

[144] JCA Boeyens, L Denner and GW PeroldElectronic interactions and reactivity of some veratrylidene-succinic acidderivatives.S. Afr. J. Chem., 1987 (40) 44-46.

[145] CE Allenspach-Wasser, JCA Boeyens and L DennerConformational analysis of 1,8-diarylnaphthalenes by two-dimensionalmapping of steric energy.S. Afr. J. Chem., 1987 (40) 47-50.

[146] JCA Boeyens, L Denner, S Painter and B StaskunCrystallographic characterization of single-ortho, N-substituted ac-etanilide derivatives.S. Afr. J. Chem., 1987 (40) 60-64.

[147] JCA BoeyensDie Menslikheidsbeginsel. (The Anthropic Principle)S. Afr. Tydskr. Nat. Wet. Tegn., 1987 (6) 36-38.

[148] JCA Boeyens, L Denner, AJ Markwell and DH ReidStructure of 2-tert-butyl-6-methyl-1,6a λ4-dithia-6-azapentalene.Acta Cryst., 1987 (C43) 1384-1386.

[149] JCA Boeyens and SM DobsonStereochemistry of Metallic Macrocyclesin I Bernal (ed.) Stereochemistry of Organometallic and Inorganic Com-

pounds, Elsevier, 1987 (2) 1-102.

15

[150] P Johnston, GJ Hutchings, L Denner, JCA Boeyens and NJ CovilleMixed Metal Dimers 3. Substitution reactions of[(η5-C5H5)Fe(CO)2M(CO)5], (M=Mn,Re) and the X-ray crystal struc-ture determination of [(η5-C5H5)Fe(CO)2M(CO)4(NBu-t)] (M=Mn,Re).Organometallics, 1987 (6) 1292-1300.

[151] CC Allen, JCA Boeyens, AG Briggs, L Denner, AJ Markwell, DH Reidand BG RoseReaction of the 3,4-dimethyl-1-oxa-6 λ4-diselena-2-azapentalene withtetraphosphorus decasulphide: A new molecular rearrangement.X-ray crystal structures of 3,4-dimethyl-1-thia-6,6a λ4-diselena-2-azapentalene-2,4-dimethyl-thia-6,6a λ4-diselena-3-azapentalene and 2,4-dimethyl-thia-6,6a λ4-selena-3-azapentalene.J.C.S. Chem. Comm., 1987, 967-968.

[152] RD Hancock, SM Dobson and JCA BoeyensMetal Ion Size Selectivity of 1-Thia-4,7-diazacyclononane (9-ane N2S)and other tridentate macrocycles. A study by Molecular Mechanics Cal-culation, Structure Determination and Formation Constant Determina-tion of Complexes of 9-ane N2S.Inorg. Chim. Acta, 1987 (133) 221-231.

[153] TG Dekker, TG Fourie, E Matthee, FO Snyckers, JCA Boeyens and LDennerStudies of South-Africam medicinal plants. Part 6. A grindelane diter-penoid from Leonotis leonotis.S. Afr. J. Chem., 1987 (40) 228-232.

[154] JCA Boeyens, L Denner and GW PeroldCrystal structure of 1-(o-tolyl)-naphthalene.J. Cryst. Spectr. Res., 1988 (18) 67-73.

[155] JCA Boeyens, L. Denner and DG EvansCrystallographic study of restricted rotation in o-formanilides.J. Cryst. Spectr. Res., 1988 (18) 175-187.

[156] P Johnston, C Dickson, AJ Markwell, L Denner, JCA Boeyens and NJCovilleThe crystal and molecular structure of [(η5-C5H5)Fe(CO)2Re(CO)5] andthe reactions of [(η5-C9H7)Fe(CO)2Re(CO)5] with RNC (R=t-Bu, 2,6-Me2C6H3).Inorg. Chim. Acta, 1988 (144) 185-192.

16

[157] TG Dekker, TG Fourie, E Matthee, FO Snyckers, CJ van der Schyff,JCA Boeyens and L DennerStudies of South-African medicinal plants. Part 7. Rhinocerotinoic acid:a labdane diterpene with anti-inflammatory properties from Elytropap-

pus rhinocerotis.S. Afr. J. Chem., 1988 (41) 33-35.

[158] I Rencken, JCA Boeyens and SW OrchardCrystal structures of the trans cyclooctene complexes of copper (I) chlo-ride and silver nitrate.J. Cryst. Spectr. Res., 1988 (18) 293-306.

[159] P Johnston, L Denner, CF Marais JCA Boeyens and NJ CovilleSubstituted cyclopentadienyl complexes. 5. Crystal and molecular struc-ture of[(η5-C5H4Me)Fe(CO)(L)I] [L=2,6-Me2C6H3NC, P(OMe) andP(C6H11)3].J. Cryst. Spectr. Res., 1988 (18) 403-428.

[160] RD Hancock, SM Dobson, A Evers, PW Wade, MP Ngwenya, JCABoeyens and KP WainwrightMore rigid macocyclic ligands that show metal ion size-based selectivity.A crystallographic, molecular mechanics and formation constant studyof the complexes of bridged cyclen.J. Am. Chem. Soc., 1988 (110) 2788-2794.

[161] JCA Boeyens, L Denner, JLC Marais and B StaskunChlorine-free oxidation products from sodium hypochlorite acting on1,2,3,4-tetrahydro-9(10)-acridone and on a related 4(1H)-quinolinone.S. Afr. J. Chem., 1988 (41) 63-67.

[162] JCA Boeyens, L Denner and GW PeroldRotamers and isomers in the fulgide series. I. Stereochemistry andconformational analysis of bis(3,4-dimethoxybenzilidene) succinic anhy-drides by X-ray crystallography and molecular mechanics.J.C.S. Perkin II, 1988, 1749-1758.

[163] RD Hancock, MS Shaikjee, SM Dobson and JCA BoeyensThe stereochemical activity or non-activity of the ‘inert’ pair of electronson lead(II) in relation to its complex stability and structural properties.Some considerations in ligand design.Inorg. Chim. Acta, 1988 (154) 229-238.

[164] DG Evans and JCA BoeyensMapping the conformation of eight-membered ringsActa Cryst. B, 1988 (44) 663-671.

17

[165] JCA Boeyens, L Denner and GW PeroldRotamers and isomers in the fulgide series. 2. Stereochemistry and con-formational analysis of bis(p-methoxybenzylidene) succinic anhydridesby X-ray crystallographhy and molecular mechanics.J.C.S. Perkin II, 1988, 1999-2005.

[166] RD Hancock, R Bhavan, PW Wade, JCA Boeyens and SM DobsonLigand design for complexation in aqueous solution I. Neutral oxygendonor bearing groups as a means of controlling size-based selectivity formetal ions.Inorg. Chem., 1989 (28) 187-194.

[167] CC Allen, JCA Boeyens and DC LevendisAnalysis of disorder in room-temperature pyrene-pyromellitic dianhy-dride.S. Afr. J. Chem., 1989 (42) 38-42.

[168] J du Toit, DC Levendis, JCA Boeyens, MS Loonat, L Carlton, W Pickland NJ CovilleSubstituted cyclopentadienyl complexes VII. An NMR and X-raycrystallographic study of [(η5-C5H4R)Fe(CO)(PPh3I] (R=CHPh2, I,CH(CH3)2).J. Organomet. Chem., 1989 (368) 339-350.

[169] CC Allen, JCA Boeyens, CW Holzapfel and JM KoekemoerThe crystal structure of 5-O-benzoyl-3-deoxy-3-C-(carboxymethyl-3,4-L-lactone)-L-lyxose diethyl thioacetal.S. Afr. J. Chem., 1989 (42) 73-75.

[170] RD Hancock, MP Ngwenya, PW Wade, JCA Boeyens and SM DobsonThe synthesis of complexes of novel structurally reinforced tetraaza-macrocyclic ligands of high ligand field strength. A structural and molec-ular mechanics study.Inorg. Chim. Acta, 1989 (164) 73-84.

[171] KE du Plooy, CF Marais, L Carlton, R Hunter, JCA Boeyens and NJCovilleSteric effects associated with monosubstituted transition-metal com-plexes. Synthesis and NMR spectroscopic and molecular mechanicsstudy of [(η5-C5H4Bu

t)Fe(CO)(L)I] complexes and crystal structure de-

termination of [(η5-C5H4But)Fe(CO)(PPh3I].

Inorg. Chem., 1989 (28) 3855-3860.

[172] JCA Boeyens and DG EvansGroup theory of ring pucker.Acta Cryst. B, 1989 (45) 577-581.

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[173] DG Evans and JCA BoeyensConformational analysis of ring pucker.Acta Cryst. B, 1989 (45) 581-590.

[174] MS Loonat, L Carlton, JCA Boeyens and NJ CovilleSubstituted cyclopentadienyl complexes. Part 4.The catalyzed synthesis and proton nuclear magnetic resonance spectraof [Ru(η5-C5H4Me)(CO)(L)I] and[Ru(η5-C9H7)(CO)(L)I](L = phosphine or isocyanide) and the crystal structure determinationof [Ru(η5-C9H7)(CO){P(CH)2Ph)3}I].J.C.S. Dalton Trans., 1989, 2407-2414.

[175] RD Hancock, MP Ngwenya, A Evers, JCA Boeyens and SM DobsonOpen-chain polyamine ligands with more rigid double connectingbridges. A study of their metal ion selectivities by means of molecu-lar mechanics calculation, crystallography and thermodynamics.Inorg. Chem. 1990 (29) 264-270.

[176] PW Wade, RD Hancock, JCA Boeyens and SM DobsonStructutal reinforcement of a large macrocyclic ligand. A structural,molecular mechanics and thermodynamic study.J.C.S. Dalton Trans., 1990, 483-488.

[177] FM O’Neill and JCA BoeyensMolecular mechanics of single bonds in tetrakis (carboxylato) dirhodiumsystems.Inorg. Chem., 1990 (29) 1301-1302.

[178] R Bhavan, RD Hancock, PW Wade, JCA Boeyens and SM DobsonCrystallographic study of the barium(II) complex of a lariat ether withlong pendent arms.Inorg. Chim. Acta, 1990 (171) 235-238.

[179] MW Bredenkamp, CW Holzapfel, RM Snyman, CC Allen and JCABoeyensCyclopiamide, A new isoindol[4,6-cd]indole from penicillium cyclopium.Phytochem. 1990 (29) 639-642.

[180] H Schwelnus, L Denner and JCA BoeyensThe crystal structure of lysidine·HAu(CN)2 – A model compound ofweak-base anion-exchange resin loaded with gold cyanide.Polyhedron, 1990 (9) 975-979.

[181] DG Evans and JCA BoeyensThe conformation of nine-membered rings.Acta Cryst. B, 1990 (46) 524-532.

19

[182] JCA Boeyens, SM Dobson and EL OosthuizenThe conformation of pentaazamacrocyclics. Part 1. Crystal structuresof nickel(II) and copper(II) complexes of 1,4,7,11,14-pentaazacyclo-heptadecane.J. Cryst. Spectr. Res., 1990 (20) 407-413.

[183] JCA Boeyens and SD TravlosA free-electron study of color visionJ. Cryst. Spectr. Res., 1990 (20) 433-439.

[184] JP Michael, DG Billing, JCA Boeyens, L Carlton, L Denner and IAHindmarchThe structure and conformation of [1,1′-bipyrrolidine]-2,2′-dithione.J. Mol. Struct., 1990 (238) 391-401.

[185] RD Rogers, JD Royal, DM Bolton, JCA Boeyens and CC Allenf -Element/crown ether complexes. 20. Synthesis and structure of[Y(NO3)3(OH2)3]·1.5(15-crown-5)Me2CO.J. Cryst. Spectr. Res., 1990 (20) 525-533.

[186] JCA Boeyens and EL OosthuizenCrystal structure oftrans-dibromo(1,4,8,11-tetraazaundecane)nickel(III) perchlorate.J. Cryst. Spectr. Res., 1990 (20) 617-619.

[187] JCA Boeyens, SM Dobson and RCM MboweniThe structure ofdi-µ-bromo(4-thia-1,7-diazoniaheptane)bis(copper(II)bromide) andbromo(1,4,7-triazaheptane)copper(II) bromide.Acta Cryst. C., 1991 (47) 186-188.

[188] KV Damu, RD Hancock, PW Wade, JCA Boeyens, DG Billing andSM DobsonControl of metal-ion size-based selectivity through the structure of theoxygen donor pendent groups on lariat ethers. A crystallographic andthermodynamic study.J. C. S. Dalton Trans., 1991, 293-298.

[189] JCA BoeyensGauge Chemistryin W Gans, A Blumen and A Amann, Large-scale molecular systems:

Quantum and stochastis aspects. Beyond the simple molecular picture.Plenum, Nato ASI Series B, 1991 (258) 363-370.

[190] DG Billing, JCA Boeyens, L Denner, KE du Plooy, GC Long and JPMichaelConformational analysis of rotation barriers in N-arylpyrrolidin-2-ones.Acta Cryst. B, 1991 (47) 284-288.

20

[191] DG Billing, JCA Boeyens, L Carlton, DC Levendis and GW PeroldComparison of the NMR coupling paths in leucodrin and conocarpin bylow-temperature X-ray structure analysis.J. C. S. Perkin II, 1991, 695-700.

[192] JCA Boeyens, E Ferg, DC Levendis and FRL SchoningX-ray diffraction analysis of the ammonium nitrate IV-III-II and IV-IIphase changes under controlled humidity conditions.S. Afr. J. Chem., 1991 (44) 42-46.

[193] B Staskun, T van Es, DG Billing and JCA BoeyensNovel production from 2-phenyl-4(1H)-quinolinones.J. C. S. Chem. Comm., 1991, 927-928.

[194] TN Mali, RD Hancock, JCA Boeyens and E OosthuizenSynthesis and structure of hexathiocyanato-N-cobaltate(II) anion.J. C. S. Dalton Trans., 1991, 1161-1163.

[195] SD Travlos and JCA BoeyensDriven Morse Oscillator. The quantum problem simplified.J. Chem. Phys., 1991 (95) 4241-4244.

[196] KV Damu, RD Hancock, JCA Boeyens and SM DobsonStructure and stability of some complexes of lariat ethers with stericallyhindered pyridyl groups as pendent donors.S. Afr. J. Chem., 1991 (44) 65-70.

[197] DG Billing, JCA Boeyens, DC Levendis and JP MichaelCrystallographic study of N-arylpyrrolidin-2-ones.S. Afr. J. Chem., 1991 (44) 75-79.

[198] DG Billing, JCA Boeyens, L Denner, MD Hellyar, L Lai, AJ Mattheeand DH ReidStructure of 2,3-dicyclohexyl-6,7-dihydro-5H-2aλ4-thia-2,3,4a,7a-tetraazacyclopent[cd]indene-1(2H),4(2H)-diselone.Acta Cryst. C, 1991 (47) 2564-2567.

[199] KV Damu, H Maumela, RD Hancock, JCA Boeyens and SM DobsonA structural and thermodynamic study of the effect of sterically hinder-ing alkyl groups on complex stability.J. C. S. Dalton Trans., 1991, 2717-2721.

[200] JS Field, RJ Haines, E Minshall, CN Sampson, J Sundermeyer, SFWoollam, CC Allen and JCA Boeyens.Electrophillic attack on diphosphazane-bridged derivatives of diruthe-nium nonacarbonyl by halogens.J. C. S. Dalton Trans., 1991 2761-2768.

21

[201] JCA Boeyens and EL OosthuizenThe conformation of pentaazamacrocyclics. Part 2. Determination oftwo disordered structures (15-ane N5)Cu(II) and (16-ane N5)Ni(II) usingmolecular mechanics.J. Cryst. Spectr. Res., 1992 (22) 3-7.

[202] WL Ingham, SD Travlos, JCA Boeyens, M Berry and NJ CovilleStructures of [(L)(CO)4ReMo(CO)3(η

5-C5H5)] (L=CO, t-BuNC).Acta Cryst. C, 1992 (48) 465-468.

[203] JCA BoeyensThe geometry of quantum events.Specul. Sci. and Technol., 1992 (15) 192-210.

[204] SD Travlos and JCA BoeyensThe absorption spectrum of rhodopsin.S. Afr. J. Chem., 1992 (45) 111-112.

[205] JCA Boeyens, CC Allen and GW PeroldRotamers and isomers in the fulgide series. Part 3. Structures of thebis(4-methoxy-3-methylbenzilidene)succinic anhydrides.J.C.S. Perkin II, 1993, 1161-1166.

[206] DG Billing, JCA Boeyens, W Haag, L Lai and DH ReidStructure of5,10-dihydro-3-phenylimino-1,2,4-thiaselenazolo[4,5,6][2,4]benzodiazepineActa Cryst. C, 1993 (49) 1781-1783.

[207] SD Travlos and JCA BoeyensA new method for approximate solution of one-dimensional Schrodingerequations.Theor. Chim. Acta, 1994 (87) 453-464.

[208] JCA Boeyens, RD Hancock, MP Ngwenya and EL OosthuizenCrystal structure of the macrocyclic complex [Cu([16]ane N4O)](ClO4)2.([16] ane N4O=1-oxa-4,7,11,14-tetra-azacyclohexadecane).S. Afr. J. Chem, 1994 (47) 68-71.

[209] JCA Boeyens, LM Cook, GM Nelson and TG FourieConformation and drug activity of pentacyclo-undecanes.S. Afr. J. Chem., 1994 (47) 72-75.

[210] JCA BoeyensIonization radii of compressed atoms.J. C. S. Faraday Trans., 1994 (90) 3377-3381.

[211] JCA Boeyens and EL OosthuizenThe disordered macrocyclic (15-ane N5)Cu(II)(ClO4)2 at low tempera-ture.J. Chem. Cryst., 1994 (12) 815-816.

22

[212] JCA Boeyens and FMM O’NeillMolecular modelling of dimetal systems. Dimolybdenum quadruplebonds.Inorg. Chem., 1995 (34) 1988-1995.

[213] JCA BoeyensUnderstanding electron spin.J. Chem. Ed., 1995 (72) 412-415.

[214] JCA BoeyensRed shifts in a curved space.S. Afr. J. Sci., 1995 (91) 220.

[215] DG Billing, JCA Boeyens, L Lai and DH Reid2,3-Diethyl-5,6,7,8-tetrahydro-2aλ4-thia-2,3,4a,8a-tetraazacyclopent[cd]azulene-1(2H),4(3H)dithione.Acta Cryst. C, 1995 (51) 2354-2356.

[216] GD Hosken, CC Allen, JCA Boeyens and RD HancockStructure of the copper(II) complex of a highly preorganized tetraden-tate ligand based on bispidine(3,7-diazabicyclo)[3.3.1]nonane.J.C.S. Dalton Trans., 1995, 3705-3708.

[217] JCA BoeyensEffect of the environment on chemical binding.Electr. J. Theor. Chem., 1996 (1) 38-44.

[218] M Ramm, P Luger, D Zobel, W Xuczek and JCA BoeyensStatic disorder in hexagonal crystal structures of C60 at 100K and 20K.J. Cryst. Res. and Technol., 1996 (1) 43-53.

[219] JCA BoeyensFundamentals of Molecular Modelling.in W Gans A Amann and JCA Boeyens (eds), Fundamental Principles

of Molecular Modeling, 1996, 1-9, Plenum NY.

[220] JCA BoeyensEnvironmental factors in molecular modelling.in W Gans A Amann and JCA Boeyens (eds), Fundamental Principles

of Molecular Modeling, 1996, 99-103, Plenum NY.

[221] JCA Boeyens, LM Cook, T Ngoi and DH ReidCrystal structure of two isomeric oximes (EE)-2-methyl-3-phenyl-3-thiocyanatopropenaldoxime and (2)-5-methyl-6-phenyl-1,3-thiazin-2-one oxime.J. Chem Cryst., 1996 (26) 215-218.

23

[222] HG Kruger, FJC Martins, AM Viljoen, JCA Boeyens, LM Cook andDC LevendisStructure and conformation of the hydrate of 8,11-dihydro-pentacyclo[5.4.0.O2,603,10.O5,9]undecane-8,11- lactam.Acta Cryst. B, 1996 (52) 838-841.

[223] DG Billing, JCA Boeyens, L Lai and DH Reid5-Ethylamino-3-p-tolyl-1λ4,2,4-thiaselenazol-1-ylium bromide: A newheteroaromatic system.Acta Cryst. C, 1996 (52) 1718-1719.

[224] JCA Boeyens and RB KassmanThe Schrodinger equation and spin.S. Afr. J. Chem., 1996 (49) 1-7.

[225] JCA Boeyens, LM Cook, PA Duckworth, SB Rahardjo, MR Taylor andKP WainwrightStructural requirements for rapid metal ion ingress into hydroxyethy-lated tetraazamacrocycles.Inorg. Chim. Acta, 1996 (246) 321-329.

[226] DG Billing, JCA Boeyens, LM Cook, L Lai and DH Reid5,6,7,8-Tetrahydro-2,3-diphenyl-2aλ4-thia-2,34a-tetraazacyclopent[cd]azulene-1[2H],4[3H]diselone.Acta Cryst. C, 1996 (52) 970-973.

[227] SD Travlos and JCA BoeyensA modified Morse function to describe pairwise atomic interactions.S. Afr. J. Chem., 1997 (50) 17-21.

[228] JCA Boeyens, M Ramm, D Zobel and P LugerStatic disorder and packing in two orthorhombic crystal structures offullerene inclusion compoundsS. Afr. J. Chem., 1997 (50) 28-33.

[229] JCA Boeyens, SD Travlos, GJ Engelbrecht, CW Holzapfel and GJKrugerCrystal structures of two anomeric 2,3-unsaturated C-glycopyranosides.S. Afr. J. Chem., 1997 (50) 48-51.

[230] JCA Boeyens and MJ van der MerweThe nonexistent crystals of macrocyclic nickel(III). Structure of thecobalt(III) complex of 1,4,7-triazacyclononane-N,N′,N′′-triacetate.Inorg. Chem., 1997 (36) 3779-3780.

[231] JCA Boeyens and J du ToitThe theoretical basis of electronegativity.Electr. J. Theor. Chem., 1997 (2) 296-301.

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[232] JCA Boeyens, L Cheng, NJ Coville, DC Levendis and K McIntoshThe importance of intermolecular forces in crystal structure analysis:Solid state study of the diag-to-lat isomerization of(η5-C5H4Me)Re(CO)2Br2.J. Chem. Cryst., 1998 (28) 185-191.

[233] JCA BoeyensIntermolecular Bondingin W Gans and JCA Boeyens (eds) Intermolecular Interactions, Plenum,1998, 3-7.

[234] JCA Boeyens and FMM O’NeillMolecular modelling of dimetal systems. Part 2. Low-order dimolybde-num.Inorg. Chem., 1998 (37) 5346-5351.

[235] JCA Boeyens and FMM O’NeillMolecular modelling of dimetal systems. Part 3. Dichromium bonds.Inorg. Chem., 1998 (37) 5352-5357.

[236] JCA Boeyens, LM Cook, H-G Krane and FRL SchoningXRD measurements of the structure factors of diamond.Z. Kristallogr ., 1999 (214) 351-352.

[237] JCA BoeyensStructure of the Electron.Trans. Roy. Soc. S. Afr., 1999 (54) 323-358.

[238] A Maluba, E Kiremire, H Pollak and J BoeyensMossbauer effect study of iron(III)–inidazolidine nitroxyl-free radical lig-and complex.Hyperfine Interactions, 1999 (120/121) 745–749.

[239] J Bacsa and JCA BoeyensMolecular modelling of dimetal systems. Part 4. Dirhenium bonds.J. Organomet. Chem., 2000 (596) 159-164.

[240] JM Smith, L Cheng, NJ Coville, J Schulte, PS Dimpe, MS Adsetts,LM Cook, JCA Boeyens and DC LevendisSolid-state reactivity and single-crystal studies. The case of diag-lat iso-merization in [Re(η5-C5H4Me)(CO)(P(OPh3)Br2] and

[Re(η5-C5H4tBu)(CO)2Br2].

Organomet., 2000 (19) 2597-2602.

[241] JM Smith, NJ Coville, LM Cook and JCA BoeyensSteric parameters of conformationally flexible ligands from X-ray struc-tural data. 1. P(OR)3 ligands in equivalent ligand environments.Organomet., 2000 (19) 5273-5280.

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[242] JCA BoeyensQuantum Potential Chemistry.S. Afr. J. Chem., 2000 (53) 49-72.

[243] EMR Kiremire, G Kumar, K Chibale, JCA Boeyens and J VanwykThe Lewis base behaviour of copper (II) nitroxyl free radical complex(CuL2) – Reaction with acetic acid.Orient. J. Chem., 2000 (16) 451-452.

[244] JCA Boeyens and P CombaMolecular mechanics: the theoretical basis, rules, scope and limits.Coord. Chem. Revs., 2001 (212) 3-10.

[245] JCA BoeyensSymmetry and Structure: an overview.Cryst. Engin., 2001 (4) 61-100.

[246] V Ichharam and JCA BoeyensStructural analysis of 2-(2-thienyl)-1-(2-pyrazinyl)ethene [C10H8N2S].Cryst. Engin., 2001 (4) 171-178.

[247] EMR Kiremire, G Kumar, H Muwowo, K Chibale, JCA Boeyens, JAvan Wyk and GN KamauThe synthesis and characterization of the first tris-chelate complexesof vanadium(III), chromium(III) and manganese(III) containing depro-tonated 4-phenylacetylidene-2,2,5,5-tetramethylimidazolidin-1-oxyl ni-troxyl free radical ligand.Orient. J. Chem., 2001 (17) 37-42.

[248] JCA Boeyens and VVH IchharamRedetermination of the crystal structure of calcium sulphate dihydrate,CaSO4·2H2O.Z. Kristallogr., 2002 (217) 9-10.

[249] JCA BoeyensPeriodicity of the stable isotopes.J. Radioanal. Nucl. Chem., 2003 (257) 33-43.

[250] JCA BoeyensNumber Patterns in Nature.Cryst. Engin., 2003 (6) 167-185.

[251] JCA Boeyens, LM Cook, Y Ding, MA Fernandes and DH ReidThermal oligomerisation of aryl isocyanides: formation of pyrazino[1,2-a:4,5-a′]diindoles and indigo diarylimines.Org. Biomol. Chem., 2003 (1) 2168-2172.

[252] L Popovic, D de Waal and JCA BoeyensCorrelation between Raman wavenumbers and P-O bond lengths in crys-talline inorganic phosphates.J. Raman Spectrosc., 2005 (36) 2-11.

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[253] JCA BoeyensQuantum theory of molecular conformation.C.R. Chimie, 2005 (8) 1527-1534.

[254] JCA BoeyensAngular Momentum in Chemistry.Z. Naturforsch., 2007 (62b) 373-385.

[255] N KhosraviTalebi, D de Waal and JCA BoeyensRaman investigation of ceramic tiles from the dome of an Iranianmosque.Asian Chem. Lett., 2007 (2) 40-42.

[256] JCA BoeyensThe Holistic Moleculein: JCA Boeyens and JF Ogilvie (eds) Models, Mysteries and Magic of

Molecules, 2007, Springer, 447-475.

[257] JCA BoeyensThe Periodic Electronegativity TableZ. Naturforsch., 2008 (63b) 199-209.

[258] JCA BoeyensCommensurability in the solar systemPhysics Essays, 2009 (22) 493–499.

[259] JCA BoeyensEmergent Properties in Bohmian Chemistryin MV Putz (ed.), Quantum Frontiers of Atoms and Molecules, NOVA,New York, 2010, 203–226.

[260] JCA BoeyensThe universe in perspectivePhysics Essays, 2010 (23) 337–343.

[261] JCA BoeyensA Molecular-Structure HypothesisInt. J. Mol. Sci, 2010 (11) 4267–4248.

[262] JCA Boeyens and CJH SchutteAssumptions of Quantum Chemistryin MV Putz (ed.), Chemical Information and Computational Challenges,NOVA, New York, 2012, 153–180.

[263] JCA Boeyens and DC LevendisThe Structure LacunaInt. J. Mol. Sci, 2012 (13) 9081–9096.

[264] JCA Boeyens and P CombaChemistry by Number TheoryStruct. Bond. 2013 (148) 1–24.

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[265] JCA BoeyensChemistry in Four DimensionsStruct. Bond. 2013 (148) 25–47.

[266] JCA BoeyensCalculation of Atomic StructureStruct. Bond. 2013 (148) 71–91.

[267] JCA BoeyensCovalent InteractionStruct. Bond. 2013 (148) 93–135.

[268] P Comba and JCA BoeyensMolecular ShapeStruct. Bond. 2013 (148) 137–159.

[269] JCA Boeyens and DC LevendisAll is NumberStruct. Bond. 2013 (148) 161–179.

[270] JCA BoeyensCosmology and Sciencein A Travena and B Soren (eds) Recent Advances in Cosmology, NOVA,New York, 2013, 129–157.

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