Octahedral-tetrahedral framework solids of the vanadium phosphate system. Hydrothermal syntheses and crystal structures of the vanadium(III) phosphate Cs[VIII 2(PO4)(HPO4) 2(H2O)2] and of the mixed-valence species K[(VIVO)VIII(HPO4)3(H 2O)2]

Robert C. Haushalter, Zhanwen Wang, Mark E. Thompson, Jon A Zubieta

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Abstract

The cesium vanadium phosphate Cs[VIII 2(PO4)(HPO4) 2(H2O)2] (1) and the potassium vanadium phosphate K[(VIVO)VIII(HPO4)3(H 2O)2] (2) have been hydrothermally synthesized and structurally characterized by single-crystal X-ray methods. Green phosphate 1 is monoclinic, space group P21/a, with a = 10.004(1) Å, b = 17.812(3) Å, c = 6.370(2) Å, β = 97.02(2)°, and Z = 4, while green phosphate 2 is monoclinic, space group P21/n, with a = 6.399(3) Å, b = 10.275(2) Å, c = 17.810(2) Å, β = 96.12(2),° and Z = 4. These new reduced vanadium phosphates, built up from corner-sharing VO6 octahedra and PO4 tetrahedra, have anionic, three-dimensional framework structures that contain Cs+- and K+-filled voids.

Original languageEnglish (US)
Pages (from-to)3700-3704
Number of pages5
JournalInorganic Chemistry
Volume32
Issue number17
StatePublished - 1993

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ASJC Scopus subject areas

  • Inorganic Chemistry

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