(IUCr) Crystallography Journals Online

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Acta Cryst. (2007). E63, m878-m880 [ doi:10.1107/S1600536807007192 ]

Tris(dimethylammonium) hydrogen -dodecamolybdosilicate

Z.-J. Ku, Z.-H. Zhang and K.-L. Zhang

Abstract: The title compound, (C₂H₈N)₃[HSiMo₁₂O₄₀], has an [alpha] -Keggin heteropolyoxo anion with a central SiO₄ tetrahedron and three dimethylammonium cations. The asymmetric unit contains one Si atom and one O with site symmetry $\\overline{3}$ m, two Mo atoms, seven O atoms, two C atoms and one N atom with site symmetry m, and one Mo and three O atoms in general positions. These cations and anions are linked via N-HO hydrogen bonds, forming a layer structure.

Online 28 February 2007