Cluster cyanide-bridged heterometallic coordination polymers: synthesis and crystal structures of compounds [{Cu2(dien)2(CN)}2{Mo4Te4(CN)12}]·14.5H2O and (H3O)3K[{Mn(H2O)2}2{Mn(H2O)2(NO3)}4{W4Te4(CN)12}2]·8H2O

Abstract

The reactions of anionic molybdenum and tungsten cyanide cuboidal clusters with CuII and MnII salts afforded two new cyanide-bridged heterometallic coordination polymers with the composition [{Cu2(dien)2(CN)}2{Mo4Te4(CN)12}]⋅14.5H2O (1) and (H3O)3K[{Mn(H2O)2}2{Mn(H2O)2(NO3)}4{W4Te4(CN)12}2]·8H2O (2). The structures of these compounds were established by X-ray diffraction analysis. Compound 1 has a layered structure, in which the cuboidal cluster fragments {Mo4Te4(CN)12}6− are linked to the copper atoms of the dinuclear fragments {(H2O)(dien)Cu(μ-CN)Cu(dien)(H2O)} through the bridging CN groups. Coordination polymer 2 has a framework structure, in which the cluster fragments {W4Te4(CN)12}6− are linked to the manganese(II) aqua complexes of two types, viz., the dinuclear fragment {Mn(μ2-H2O)2Mn} and the tetranuclear cyclic fragment {(H2O)2Mn(μ2-NO3)}4, through the bridging CN groups.