Hydrothermal Synthesis, Thermal, and Magnetic Data on New Alkaline Vanadium Phosphate My(VO)9+x(PO4)4x(HPO4)12-4x with M = Cs+ (y = 5.29, x = 1) and M = NH4+, Rb+ (y ∼ 5, x ∼ 1)

Brownish platelet crystals of My(VO)9 + x(PO4)4x(HPO4)12 - 4x (M = Cs+, NH4+ and Rb+) were prepared hydrothermally. The structure of Cs approximately 5(VO)10(PO4)4(HPO4)8 was solved from single-crystal X-ray diffraction data in the centrosymmetric monoclinic space group C2/c (No. 15) a = 21.1951(8)...

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Bibliographic Details
Published in:Inorganic chemistry 2001-01, Vol.40 (2), p.272-276
Main Authors: LE FUR, E., DE VILLARS, B., TORTELIER, J., PIVAN, Y.
Format: Article
Language:English
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Summary:Brownish platelet crystals of My(VO)9 + x(PO4)4x(HPO4)12 - 4x (M = Cs+, NH4+ and Rb+) were prepared hydrothermally. The structure of Cs approximately 5(VO)10(PO4)4(HPO4)8 was solved from single-crystal X-ray diffraction data in the centrosymmetric monoclinic space group C2/c (No. 15) a = 21.1951(8) A, b = 12.2051(4) A, c = 20.6230(8) A, beta = 109.742(2) degrees, Z = 4 (R1(Fo) = 0.054, wR2(Fo2) = 0.123). The structure of Cs approximately 5(VO)10(PO4)4(HPO4)8 is described and compared to that of K2(VO)3(HPO4)4 previously reported by Lii. For the three compounds, thermogravimetric data and susceptibility measurements were investigated and were found to be in agreement with the structural study.
ISSN:0020-1669
1520-510X
DOI:10.1021/ic000464y