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The reaction of [Et4N]2WS4 with 4 equiv of CuCN in pyridine produced a new polymeric complex [WS4Cu4(Py)4(μ-CN)2]∞ 1, whose crystal structure has been characterized by single-crystal X-ray analysis. 1 (C22H2oCu4N6S4W, Mr=934.71) crystallizes in monoclinic