Abstract
Abstract A new heptanuclear compound [{Cu(TPA)CN}6W(CN)2][ClO4]8·14H2O (1) (TPA = tris(2-pyridylmethyl)amine) was synthesized by the reaction of [Cu(TPA)]2 + unit and K4W(CN)8. The cyanometalate core is encapsulated by mononuclear copper moieties via cyano bridges. 1 crystallizes in monoclinic space group P21/c with a = 22.01(2) A, b = 26.87(3) A, c = 31.64(2) A, β = 128.87(2)°, and Z = 4. Variable temperature magnetic measurements have demonstrated that very weak ferromagnetic interaction between the nearest paramagnetic CuII centers is exhibited. Thus weak ferromagnetic coupling might be transferred by NC W CN bridging units.
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