Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 3 (March 2013)

metal-organic compounds

Acta Cryst. (2013). E69, m132    [ doi:10.1107/S1600536813002985 ]

4,4'-(Ethene-1,2-di­yl)dipyridinium 4-[2-(pyridin-4-yl)ethen­yl]pyridinium octa­cyanidomolybdate(V) tetra­hydrate

X.-Z. Yang, A.-Y. Hu and A.-H. Yuan

Abstract: The crystal structure of the title compound, (C12H12N2)(C12H11N2)[Mo(CN)8]·4H2O, consists of 4,4'-(ethene-1,2-di­yl)dipyridinium and 4-[2-(pyridin-4-yl)ethen­yl]pyridinium cations disordered over the same site, an [Mo(CN)8]3- anion and four water mol­ecules of crystallization. The eight-coordinate [Mo(CN)8]3- unit exhibits a slightly distorted square-anti­prismatic geometry. In the structure, the cations (crystallographic symmetry, 2) and anions (crystallographic symmetry, 222) are arranged alternately by N-H...O and O-H...N hydrogen bonds, forming layers parallel to the bc plane. These layers are further linked through O-H...N hydrogen bonds, generating a three-dimensional supra­molecular network.

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