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2005
Structure
D 2000
33- 003
Mixed Thio/Oxo Orthovanadates Na3[VSxO4-x ] (x = 2, 3). Synthesis — Crystal
Structures — Properties. — Dark red Crystals of Na 3[VS3O] (I) and orange red crystals of Na3[VS2O2] (II) are synthesized by solid state reactions of V, Na, Na2S, Na2O,
and sulfur (400—800 °C). The samples are characterized by single crystal XRD and by
Raman and UV/VIS spectroscopy. The low temperature phase of (I) crystallizes in the
orthorhombic space group Pnma with Z = 4, the high temperature phase of (I) in the
orthorhombic space group Cmc21 with Z = 4, and compound (II) in the orthorhombic
space group Pbca with Z = 8. The chemical bonding in the [VS3O]3- and [VS2O2]3- anions of nearly ideal C3v and C2v symmetry is discussed. — (SCHNABEL, S.;
ROEHR*, C.; Z. Naturforsch., B: Chem. Sci. 60 (2005) 5, 479-490; Inst. Anorg.
Anal. Chem., Albert-Ludwigs-Univ., D-79104 Freiburg/Br., Germany; Ger., Abstr.
Eng.) — W. Pewestorf
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