Hydrothermal Synthesis and Crystal Structure of a Novel Hexacapped Keggin-type Molybdovanadoarsenate (H3O)3[AsMo12O40(VO)6]·6H2O

Abstract

Abstract: Anovel molybdovanadoarsenate(H₃O)₃[AsMo₁₂O₄o(VO)₆] · 6H₂O has been hydrothermally synthesized and structurally characterized by elemental analyses, cerimetric titration, EPR, and single crystal X-ray diffraction. The compound crystallizes in the triclinic system, space group PI with a=1. 2629(3) nm, b=1. 2635(3) nm, c=l. 7672(4) nm, a=91. 01(3)°, β=89. 98(3)°, 7=90. 00(3)°, V=2. 8198(10) nm³, Z=2, R₁= 0. 0955, wR₂=0. 1788. The polyoxoanion exhibits a hexacapped a-Keggin-type structure, in which six (VO₅) square pyramids were distributed on the surface of (AsMo₁₂O₄₀) unit and made the bridge-oxygen (O_b, O_c) atoms of the a-Keggin-type polyoxoanion occupied.

Key words: Molybdovanadoarsenate, Hydrothermal synthesis, Crystal structure, Hexacapped Keggin

CLC Number:

O611

TrendMD:

HAO Na, LI Yang-Guang, SHEN En-Hong, WANG En-Bo, LU Ying, DUAN Ying-Bo. Hydrothermal Synthesis and Crystal Structure of a Novel Hexacapped Keggin-type Molybdovanadoarsenate (H₃O)₃[AsMo₁₂O₄₀(VO)₆]·6H₂O[J]. Chem. J. Chinese Universities, 2003, 24(5): 779.

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Hydrothermal Synthesis and Crystal Structure of a Novel Hexacapped Keggin-type Molybdovanadoarsenate (H₃O)₃[AsMo₁₂O₄₀(VO)₆]·6H₂O

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