Crystal structure of pentapotassium dihydrogen nonavanadato(V)platinate(IV) nonahydrate

Abstract

The title compound, K5[H2PtV9O28]·9H2O, containing the nonavanadoplatinate(IV) polyanion, was obtained by hydrothermal reaction at pH = 4.2. The polyanion has approximate mm2 (C2v) symmetry. The two platinum-bound μ2-O atoms are protonated in the polyanion. The heteropolyanions form inversion-generated dimers, {[H2PtV9O28]2}10−, held together by μ2-O–H...μ2-O and μ2-O–H...μ3-O hydrogen bonds. All K+ cations are located on general positions of the space group P-1.

Keywords

• crystal structure
• nonavanadoplatinate(IV) polyanion
• heteropolyanions
• hydrogen bonding