Abstract
Two Keggin-type heteropolyanions were synthesized and characterized by X-ray crystal structure and elemental analysis as well as infrared spectroscopy. Both K3[VMo12O40]⋅19H2O (1) and [N i (H2O)6][H3PMoVMoVI 11O40]2⋅30 H2O (2) were prepared in aqueous solution. Compound 1 crystallized in the space group Pm-3m, a=10.6513(1) Å, V=1208.4(3) Å3, Z=1. Compound 2 crystallized in the space group R-3 with a=b=13.9669(2) Å, c=42.0075(5) Å, V=7096.71(2) Å3, Z=3. The compound 1 contains a {K6VMo12O40} group in which six potassium ions form a regular {K6} octahedron. The heteropolyanion [VMo12O40]3− was capped by six potassium ions and enclosed by {K6} octahedron. A three-dimensional structure was formed by the buildup of {K3[VMo12O40]} n . Compound 2 contains a one-electron reduced heteropolyanion [H3PMoVMoVI 11O40]1−. Ni2+ coordinated by six water molecules as the counter cation balances the negative charge of the molecule.
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Zhang, QZ., Lu, CZ., Yang, WB. et al. Synthesis and Structure of Two Keggin-Type Heteropolyanions: [VMo12O40]3n− n (1) and [H3PMoVMoVI 11O40]1− (2). Journal of Cluster Science 14, 381–390 (2003). https://doi.org/10.1023/B:JOCL.0000005070.97608.40
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DOI: https://doi.org/10.1023/B:JOCL.0000005070.97608.40