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Crystal structure of tetra-guanidinium [hexa-hydrogen hexa-arsenato(V)tetra-vanadate(V)] tetra-hydrate.

ABSTRACT: The complete polyoxidometallate anion in the title compound, (CH6N3)4[H6V4As6O30]·4H2O, is generated by crystallographic inversion symmetry. The polyhedral building units are distorted VO6 octa-hedra and AsO3OH tetra-hedra. The VO6 units feature a short formal V=O double bond and are linked by a common edge. Two such V2O6 double octahedral units are linked by four isolated AsO3OH tetra-hedra to complete the anion, which features two inter-nal O-H?O hydrogen bonds. In the crystal, O-H?O hydrogen bonds between the polyoxidometallate anions generate (01-1) sheets. The sheets are connected by cation-to-cluster N-H?O hydrogen bonds, and cation-to-water N-H?O links also occur. The O atom of one of the water mol-ecules is disordered over two sites in a 0.703?(17):0.297?(17) ratio.

SUBMITTER: Harrison WT

PROVIDER: S-EPMC4186164 | biostudies-literature | 2014 Sep

REPOSITORIES: biostudies-literature

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Crystal structure of tetra-guanidinium [hexa-hydrogen hexa-arsenato(V)tetra-vanadate(V)] tetra-hydrate.

Harrison William T A WT

Acta crystallographica. Section E, Structure reports online 20140801 Pt 9

The complete polyoxidometallate anion in the title compound, (CH6N3)4[H6V4As6O30]·4H2O, is generated by crystallographic inversion symmetry. The polyhedral building units are distorted VO6 octa-hedra and AsO3OH tetra-hedra. The VO6 units feature a short formal V=O double bond and are linked by a common edge. Two such V2O6 double octahedral units are linked by four isolated AsO3OH tetra-hedra to complete the anion, which features two inter-nal O-H⋯O hydrogen bonds. In the crystal, O-H⋯O hydrogen ...[more]

PMID: 25309172

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