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The title compound, [Cu 2 (CN)(SCN)(C 10 H 8 N 2 ) 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].

acta crystallographica. section e

catena-Poly[[(2,2′-bipyridine-κ2N,N′)copper(I)]-μ-cyanido-κ2C:N-[(2,2′-bipyridine-κ2N,N′)copper(I)]-μ-thiocyanato-κ2S:N]