Crystal structure of a new mixed-metal coordin­ation polymer consisting of Ni(II) piperidine-di­thio­carbamate and penta­nuclear Cu(I)—I cluster units

A new heterometallic Cu(I)–Ni(II) coordination polymer, poly[[tetra-μ(3)-iodido-μ(2)-iodido-bis­(μ(3)-piperidine-1-di­thio­carbamato)propio­nitrilepenta­copper(I)nickel(II)] chloro­form monosolvate], {[Cu(I) (5)Ni(II)I(5)(C(6)H(10)NS(2))(2)(C(3)H(5)N)]·CHCl(3)}(n), has been synthesized and structurally characterized. This coordination polymer consists of an Ni(II) mononuclear unit of Ni(II)(Pip-dtc)(2) (Pip-dtc(−) is piperidine-1-di­thio­carbamate) and a penta­nuclear copper(I) cluster unit of Cu(5)I(5)(CH(3)CH(2)CN). The Ni(II) ion, which lies on an inversion centre, is surrounded by four S atoms in a square-planar coordination geometry while all Cu(I) ions have distorted tetra­hedral coordination geometries. In the penta­nuclear copper(I) cluster unit, a mirror plane passes through one Cu(I) ion and three I ions. All the S atoms in Ni(II)(Pip-dtc) are also coordinated by the Cu(I) ions, forming an infinite zigzag chain structure along the b-axis direction. The chains are weakly connected by solvent CHCl(3) mol­ecules via Cl⋯I [3.653 (1) Å] and Cl⋯S [3.4370 (1) Å] short-contact inter­actions.