catena-Poly(22′-bipyridine-κ2 NN′)copper(I)-μ-cyanido-κ2 C:N-(22′-bipyridine-κ2 NN′)copper(I)-μ-thio­cyanato-κ2 S:N

摘要

The title compound, [Cu2(CN)(SCN)(C10H8N2)2]n, contains two crystallographically independent Cu^I atoms, each in a distorted tetra­hedral geometry. Each Cu atom is coordinated by a bidentate chelating 2,2′-bipyridine ligand. A bridging cyanide anion links the two Cu(2,2′-bipyridine) units to form a binuclear unit. Adjacent binuclear units are connected by a thio­cyanate anion into a one-dimensional helical chain along [010]. The cyanide anion is disordered, with each site occupied by both C and N atoms in an occupancy ratio of 0.61 (5):0.39 (5). The S atom of the thio­cyanate anion is also disordered over two sites, with occupancy factors of 0.61 (3) and 0.39 (3). There are π–π inter­actions between the pyridyl rings of neighbouring chains [centroid–centroid distance = 3.82 (1) Å].