One- and three-dimensional octacyanometalate(IV) networks constructed via a building block approach: {[trans-NiII(tn)2(OH2)][trans-NiII(μ-NC)2(tn)2][(μ-NC)3MIV(CN)5] · 6H2O} (MIV = Mo, W) and Cs4[CuII(OH2)4]2[CuII(NH3)]4[MoIV(CN)8]4 · 2H2O

Three octacyanometalate(IV) coordination polymers containing copper(II), nickel(II), 1,3-propanediamine, and ammonia have been prepared. The amine ligands limit the number and directionality of cyano linkages formed between metal centers. Surprisingly, 1- and 3-D structures are obtained instead of the expected 2-D structures.