preparation and characterization of 6-molybdocobaltate and 6-molybdoaluminate cobalt salts. evidence...

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2004 Molybdenum I 5600 Preparation and Characterization of 6-Molybdocobaltate and 6-Molybdoalumi- nate Cobalt Salts. Evidence of a New Heteropolymolybdate Structure. — Single crystals of [Co 2+ (H2O)5](H3O + )[MMo6(OH)6O18] 3- ·6H2O (M: Co, Al) are synthesized by cationic exchanges in aqueous solutions of the counterions of the starting )3[MMo6(OH)6O18] salts at 50 °C for 2 h. The samples are characterized by TGA, XRD, EXAFS, and IR and Raman spectroscopy. Both compounds crystallize in the or- thorhombic space group Pcab with Z = 8. Evidence is provided for the formation of new heteropolyoxomolybdates derived from the well known Anderson structure. — (MARTIN, C.; LAMONIER*, C.; FOURNIER, M.; MENTRE, O.; HARLE, V.; GUILLAUME, D.; PAYEN, E.; Inorg. Chem. 43 (2004) 15, 4636-4644; Lab. Catal., CNRS, Univ. Sci. Technol. Lille-Flandres-Artois, F-59655 Villeneuve d'Ascq, Fr.; Eng.) — W. Pewestorf 40- 031 NH + 4 ( NH + 4

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2004

MolybdenumI 5600 Preparation and Characterization of 6-Molybdocobaltate and 6-Molybdoalumi-

nate Cobalt Salts. Evidence of a New Heteropolymolybdate Structure. Single crystals of [Co2+(H2O)5](H3O+)[MMo6(OH)6O18]3- 6H2O (M: Co, Al) are synthesized by cationic exchanges in aqueous solutions of the counterions of the starting

)3[MMo6(OH)6O18] salts at 50 C for 2 h. The samples are characterized by TGA, XRD, EXAFS, and IR and Raman spectroscopy. Both compounds crystallize in the or-thorhombic space group Pcab with Z = 8. Evidence is provided for the formation of new heteropolyoxomolybdates derived from the well known Anderson structure. (MARTIN, C.; LAMONIER*, C.; FOURNIER, M.; MENTRE, O.; HARLE, V.; GUILLAUME, D.; PAYEN, E.; Inorg. Chem. 43 (2004) 15, 4636-4644; Lab. Catal., CNRS, Univ. Sci. Technol. Lille-Flandres-Artois, F-59655 Villeneuve d'Ascq, Fr.; Eng.) W. Pewestorf

40- 031NH+4

(NH+4

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