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

Acta Crystallogr E Crystallogr Commun. 2021 Oct 29;77(Pt 11):1180-1184. doi: 10.1107/S2056989021011002. eCollection 2021 Nov 1.

Abstract

The title compounds, di-μ-chlorido-bis-({2-[(η-2,3)-(prop-2-en-1-yl)sulfan-yl]pyridine-κN}copper(I)), [Cu2Cl2(C8H9NS)2], and di-μ-bromido-bis-({2-[(η-2,3)-(prop-2-en-1-yl)sulfan-yl]pyridine-κN}copper(I)), [Cu2Br2(C8H9NS)2], were obtained by alternating-current electrochemical synthesis starting from an ethano-lic solution of 2-[(prop-2-en-1-yl)sulfan-yl]pyridine (Psup) and the copper(II) halide. The isostructural crystals are built up from centrosymmetric [Cu2 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 inter-actions into a three-dimensional network.

Keywords: allyl derivative; copper(I); crystal structure; pyridine-2-thiol; η2-inter­action.

Grants and funding

This work was funded by Ministry of Education and Science of Ukraine grants 0120U101622 and 0120U102028; Javna Agencija za Raziskovalno Dejavnost RS grant P1–0045.