2006

TungstenI 5700 Novel Lanthanoid Complexes of Monovacant Keggin- and Dawson-Type Poly-

oxoanions. — The new compounds (IV), (VII), and (X) are characterized by IR and Raman spectroscopy, 31P NMR spectroscopy ((VI) and (VIII)), energy dispersive X-ray fluorescence analysis, and single crystal XRD. The three compounds crystallize in the triclinic space group P1 with Z = 1. (IV) exhibits a novel one-dimensional chain-like structure consisting of (α-SiW11O39)

8- Keggin-type anions linked by PrIII atoms. The dimeric [{Ln(H2O)3(α-P2W17O61)}2]

14- anions in (VII) (Ln: Tb) and (X) (Ln: Ho) con-sist of two (α-P2W17O61)

10- Dawson-type anions linked by two trivalent lanthanides. — (DREWES, D.; KREBS*, B.; Z. Naturforsch., B: Chem. Sci. 61 (2006) 6, 637-643; Inst. Anorg. Anal. Chem., Westfael. Wilhelms-Univ., D-48149 Muenster, Germany; Ger., Abstr. Eng.) — W. Pewestorf

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