No abstract

The title compound, [Cu2(C4H4O4)(C15H11N3)2(H2O)2](NO3)2·2H2O, was synthesized under hydro­thermal conditions. The dinuclear copper complex is located on a crystallographic inversion centre. The CuII ion is penta­coordinated in a tetra­gonal–pyramidal geometry, with one O atom of a succinate dianion and three N atoms of a 2,2′:6′,2′′-terpyridine ligand occupying the basal plane, and a water O atom located at the apical site. In the crystal structure, O—H⋯O hydrogen bonding links the mol­ecules into a chain parallel to the a axis.

Key indicators: single-crystal X-ray study; T = 296 K; mean (C-C) = 0.005 Å; R factor = 0.040; wR factor = 0.090; data-to-parameter ratio = 14.0.In the title salt, (C 13 H 10 N 3 O 2 )[Ni(C 3 S 5 ) 2 ], the Ni III cation is S,S 0 -chelated by two 2-thioxo-1,3-dithiole-4,5-dithiolate anions in a distorted square-planar geometry. The complex anion is approximately planar with a maximum deviation of 0.097 (1) Å . In the 1-(4-nitrobenzyl)-4-cyanopyridinium cation, the pyridine ring is twisted at a dihedral angle of 73.84 (16) with respect to the benzene ring. -stacking is observed between nearly parallel [dihedral angle = 4.71 (7) ] dithiole and benzene rings, the centroid-centroid distance being 3.791 (2) Å . Related literature