CRYSTAL-STRUCTURE OF ZN3.77V1.54MO1.46O12 CONTAINING ZNO6 TRIGONAL PRISMS

Single crystals of Zn3.77V1.54Mo1.46O12 were grown in a ZnO/V2O5/MoO3 melt. The colorless needles were determined to be orthorhombic, space group P2(1)2(1)2(1) (No. 19), a = 5.048(4) Angstrom, b = 10.400(2) Ang strom, c = 17.560(7) Angstrom, V = 921.9(6) Angstrom(3), and Z = 4. On e type of zinc cation in the structure exhibits trigonal prismatic coo rdination, and relatively large distortions of the Zn-O bond lengths i n the trigonal prisms reduce the symmetry from Pnma (centrosymmetric) to P2(1)2(1)2(1) (acentric).