A two-dimensional copper(I) coordination polymer based on 1-[2-(cyclo-hexyl-sulfan-yl)eth-yl]pyridin-2(1 H )-one.

The reaction of copper(I) iodide with 1-[2-(cyclo-hexyl-sulfan-yl)eth-yl]pyridin-2(1 H )-one ( L , C13 H19 NOS) in aceto-nitrile/di-chloro-methane results in a crystalline coordination polymer, namely poly[bis-{μ2 -1-[2-(cyclo-hexyl-sulfan-yl)eth-yl]pyridin-2(1 H )-one}tetra-μ3 -iodido-tetra-copper(I)], [Cu4 I4 L 2 ] n . The asymmetric unit comprises two ligand mol-ecules, four copper(I) ions and four iodide ions. Inter-estingly, the O atoms are bound to the soft copper(I) ions. The stair-step clusters of Cu and I atoms in the asymmetric unit are linked repeatedly, giving rise to infinite chains along [100]. Neighbouring infinite chains are linked through the L mol-ecules, forming a two-dimensional brick-wall structure. These two-dimensional networks are stacked alternately along [001]. Additionally, there are inter-molecular C-H⋯I hydrogen bonds and C-H⋯π inter-actions between the ligands.