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The reaction of [Et4N]2WS4 with 4 equiv of CuCN in pyridine produced a new polymeric complex [WS4Cu4(Py)4(m-CN)2]∞ 1, whose crystal structure has been characterized by single-crystal X-ray analysis. 1 (C22H20Cu4N6S4W, Mr = 934.71) crystallizes in monoclinic, space group P21/m with a = 8.994(2), b = 16.038(3), c = 12.026(3) ? b = 90.85(1)? V = 1734.6(6) ?, Z = 2, Dc = 1.789 g/cm3, F(000) = 896, m(MoKa) = 59.8 cm-1 and T = 193 K. The structure was refined to R = 0.064 and Rw = 0.080 for 2209 observed reflections (I > 3.0s(I)). The X-ray analysis shows that the tetrahedral WS4 core is coordinated by four Cu atoms, forming a saddle-like WS4Cu4 unit. These repeating units are further interconnected by four Cum-CNCu bridges to generate a one-dimensional ladder-shaped structure. The W…Cu bond distances are 2.726(2) and 2.723(2) ? respectively.
The reaction of [Et4N] 2WS4 with 4 equiv of CuCN in pyridine produced a new polymeric complex [WS4Cu4 (Py) 4 (m-CN) 2] ∞ 1 whose crystal structure has been characterized by single-crystal X-ray analysis. (C22H20Cu4N6S4W, Mr = 934.71) crystallizes in monoclinic space group P21 / m with a = 8.994 (2), b = 16.038 (3), c = 12.026 (3)? B = 90.85 D = 1.789 g / cm3, F (000) = 896, m (MoKa) = 59.8 cm-1 and T = 193 K. The structure was refined to R = 0.064 and Rw = 0.080 for 2209 observed reflections (I> 3.0s (I)). The X-ray analysis shows that the tetrahedral WS4 core is coordinated by four Cu atoms, forming a saddle-like WS4Cu4 unit. These repeating units are further interconnected by four Cum-CNCu bridges to generate a one-dimensional ladder-shaped structure. The W ... Cu bond distances are 2.726 (2) and 2.723 (2)? respectively.