Crystal structure of bis[μ-S-hexyl 3-(2-oxidobenzylidene)dithiocarbazato-κ⁴ O,N ³,S:O]dicopper(II)

The title compound, [Cu2(C₁₄H₁₈N₂OS2)₂], is a binuclear copper(II) complex of an oxybenzylidenedithiocarbazate ligand. The ligand coordinates in a tridentate manner through N-, S- and O-donor atoms. Each O atom also bridges to a second Cu^II ion to form the binuclear species. It has a central Cu2O₂ rhomboid moiety and a metal-to-metal separation of 2.9923(6)Å. In the crystal, the binuclear complexes stack along the a axis with all the hexyl chains located side-by-side, forming a hydrophobic region. The complexes are linked via C - H⋯N hydrogen bonds, forming chains along the c-axis direction. One Cu^II atom has the S atom of a symmetry-related complex located approximately in the apical position at 2.9740(11)Å. This weak interaction links the chains to form slabs parallel to the ac plane.