Synthesis and crystal structure of a binuclear copper complex [Cu2( L )2(Cl)2] · 2(C3H7NO), where L = 1H-benzimidazol-2-yl-methanol

Abstract

The copper(II) compound, (1), [Cu2(L)2(Cl)2] · 2(C3H7NO), C22H28Cl2Cu2N6O4 [where HL = 1H-benzimidazol-2-yl-methanol, C3H7NO = N,N′-dimethylformamide(DMF)], crystallizes in the triclinic space group with a = 8.363(2) Å, b = 8.866(2) Å, c = 9.327(3) Å, α = 91.415(5), β = 93.924(5), γ = 109.318(4)° and Z = 1; R 1 for 2280 observed reflections [I > 2σ(I)] was 0.0356. The centrosymmetric molecule comprises a pair of copper(II) atoms connected by two 1H-benzimidazol-2-yl-methanol ligands in syn-syn bridging mode. Four-coordination of copper(II) is further completed by chloride. The CuII–CuII distance and Cu–OR–Cu bond angle in 1 are 3.043(1) Å and 104.3(1)°, respectively.