A new dinuclear Cu(II) complex of a ligand with benz imidazole group - Synthesis and crystal structure

A new dinuclear copper complex, [Cu(C9H11N3)Cl-2](2) (C18H22Cl4Cu2N6), has been synthesized and characterized by X-ray structure determination. It crystallizes in the triclinic P1 space group with a 7.526(3), b = 9.473(4), c = 9.535(3) angstrom, alpha = 117.214(10), beta = 108.251(9), gamma = 91.560(6)degrees, V = 562.3(4) angstrom(3), Z = 1, M-r = 591.30, F(000) = 298, D-c = 1.746 g/cm(3), mu(MoK alpha) = 2.385 mm(-1), the final R = 0.0577 and wR = 0.1248 for 2188 unique reflections with 1629 observed ones (I > 2 sigma(I)). In the title complex, each copper(II) atom is located at the center of a distorted trigonal bipyramid of five coordination atoms (two nitrogen and three chlorine atoms). Two copper(II) atoms were bridged by two chlorine anions (Cl(2) and Cl(2a)) to form a Cu(II)-Cu(II) binuclear entity with the distance between two copper(II) atoms of 3.398 angstrom.