ChemInform Abstract: A New Unifying Structural Model of Heteropolymolybdate Salts: Microstructure and Thermal Stability of a Series of Molecular Oxides.

Abstract

structure structure (solids and liquids) D 2000 29 -022 A New Unifying Structural Model of Heteropolymolybdate Salts: Microstructure and Thermal Stability of a Series of Molecular Oxides. -Heteropolymolybdate salts of composition CsxH 4−x PVMo 11 O 40 ·nH 2 O (0 ≤ x ≤ 4) precipitate from aqueous solutions of Cs 2 CO 3 and H 4 PVMo 11 O 40 . The Cs salts (2 ≤ x ≤ 4) have a simple cubic structure, space group Pn3m, as determined by powder XRD. The free acid exhibits a triclinic lattice (space group P-1) for the majority of all crystals and a simple cubic lattice (Pn3m) for a minor fraction of thin crystals. Computer simulation of the XRD pattern suggest that the structure of Cs 2 H 2 PVMo 11 O 40 ·5H 2 O contains defects in the cation lattice. -(BERNDT, S.; HEREIN, D.; ZEMLIN, F.; BECKMANN, E.; WEINBERG, G.; SCHUETZE, J.; MESTL, G.; SCHLOEGL, R.; Ber.