Synthesis and crystal structure of Ca(VO)2(PO4)2

K. H. Lii, B. R. Chueh, H. Y. Kang, S. L. Wang

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A new phosphate, Ca(VO)2(PO4)2, was synthesized hydrothermally and its structure was determined from single-crystal X-ray diffraction data. It crystallizes in the noncentrosymmetric orthorhombic space group Fdd2 with a = 11.795(4), b = 15.784(6), c = 7.190(4)Å, Z = 8, and R = 0.0346. The structure consists of infinite chains of trans-corner-sharing VO6 octahedra cross-linked by phosphate groups to form a 3-dimensional network. These chains have alternating short and long V{single bond}O bonds. The network contains intersecting channels where the Ca2+ cations are located. The structure is compared with those of the AVOPO4 (A =alkali metal) family.

Original languageEnglish
Pages (from-to)72-77
Number of pages6
JournalJournal of Solid State Chemistry
Issue number1
StatePublished - Jul 1992


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