Syntheses and crystal structures of two copper(I)–halide π,σ-coordination compounds based on 2-[(prop-2-en-1-yl)sulfan­yl]pyridine

The title compounds, di-μ-chlorido-bis­({2-[(η-2,3)-(prop-2-en-1-yl)sulfan­yl]pyridine-κN}copper(I)), [Cu(2)Cl(2)(C(8)H(9)NS)(2)], and di-μ-bromido-bis­({2-[(η-2,3)-(prop-2-en-1-yl)sulfan­yl]pyridine-κN}copper(I)), [Cu(2)Br(2)(C(8)H(9)NS)(2)], were obtained by alternating-current electrochemical synthesis starting from an ethano­lic solution of 2-[(prop-2-en-1-yl)sulfan­yl]pyridine (Psup) and the copper(II) halide. The isostructural crystals are built up from centrosymmetric [Cu(2) Hal (2)(Psup)(2)] dimers, which are formed due to the π,σ-chelating behavior of the organic ligand. In the crystals, the dimers are linked by C—H⋯Hal hydrogen bonds as well as by aromatic π–π stacking inter­actions into a three-dimensional network.