Poly[aquahexabenzimidazoleocta-μ-cyanido-octacyanidotricopper(II)ditungstate(V)]

Abstract

In the polymeric title compound, [Cu3W2(CN)16(C7H6N2)6(H2O)]n, the coordination geometry of the W(V) atom is eight-coordinate dodecahedral, where four CN groups of [W(CN)8] are bridged to CuII ions, and the other four CN groups are not bridged. The coordination geometries of the CuII ions are five-coordinate pseudo-square-based pyramidal. There are two distinct Cu sites, which build and link the cyanido-bridged Cu—W ladder chains. Successive connections lead to the formation of a two-dimensional network. The H atoms of a coordinated water molecule and the imino groups form hydrogen bonds to the N atoms of non-bridged CN groups.