Trigonal-bipyramidal Copper(II) Cation with a Seven-membered Chelate Ring Containing a Disulfide Bond and Distorted Tetrahedral Copper(II) Anion

Abstract

A copper(II) complex with bis(4-(pyridine-2-yl)pyrimidin-2-yl)disulfane (ppds), bis{[bis(4-(pyridine-2-yl)pyrimidin-2-yl)-disulfane]chloridocopper(II)} tetrachloridocuprate(II), [Cu(ppds)Cl]₂[CuCl₄], was isolated. The crystal structure was determined by the single-crystal X-ray diffraction method at 293 K. It crystallizes in the monoclinic space group C2/c with a = 28.985(5)Å, b = 8.7403(14)Å, c = 17.380(3)Å, β = 103.642(3)°, V = 4278.7(12)ų, D_x = 1.795 g/cm³, and Z = 4. The R1 [I > 2σ(I)] and wR2 (all data) values are 0.0499 and 0.1115, respectively, for all 4959 independent reflections. The compound consists of two trigonal-bipyramidal copper(II) cations with a seven-membered chelate ring containing the disulfide bond of ppds and a distorted tetrahedral CuCl₄^2- anion.