Poly[[diaqua-deca -μ- cyanido-hexa-cyanidobis-(4-cyano-pyridine)di-μ- pyrimidine-tricopper(II)ditungsten(V)] dihydrate]

Abstract

In the polymeric title compound, {[Cu3W2(CN)16(C4H4N2)2(C6H4N2)2(H2O)2] ·2H2O} n , the coordination geometry of W is an eight-coordinated bicapped trigonal prism. Five of the CN groups of [W(CN)8] are bridged to Cu ions. The coordination geometries of the Cu atoms are each pseudo-octa-hedral; one Cu atom is located on a centre of inversion. The cyano-bridged W-Cu layers are linked by Cu-containing pillars, to form a three-dimensional network with cavities occupied by noncoordinated water and 4-cyano-pyridine mol-ecules.