Acta Cryst. (2009). E65, m1698-m1699  [ doi:10.1107/S1600536809050260 ]

A new hybrid Dawson-type molybdenum arsenate derivative: (H₂bpy)₃[As₂Mo₁₈O₆₂] (bpy = 4,4'-bipyridine)

H. Yu, X. Zhang, L. Kong and J. Xu

Abstract: The title compound, tris(4,4'-bipyridinium) diarsenooctadecamolybdate(VI), (C₁₀H₁₀N₂)₃[As₂Mo₁₈O₆₂], featuring protonated bipyridine molecules and a classical Dawson-type polyoxo-anion, has been synthesized under hydrothermal conditions. The polyoxoanions are linked together via the bipyridyl cations, acting as hydrogen-bond donors, generating a two-dimensional supramolecular network. The asymmetric unit contains 1.5 4,4'-bipyridinium (H₂bpy) units, with an inversion centre in the central bond of the second H₂bpy unit. The site symmetry of the anion is .

Online 28 November 2009

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