A simple synthetic route to the formation of tetracopper(I) 2-mercaptothiazoline compounds — The crystal structures of [Cu4(S-thiaz)4(PEt2Ph)2], [Cu4(S-thiaz)4(PEt3)2], [Cu4(S-thiaz)4]2, and [Cu4(S-thiaz)4]4

Abstract

Reactions of copper(I) acetate with 2-mercaptothiazoline (HS-thiaz) in the presence of tertiary phosphines lead to the formation of tetranuclear sulphur-bridged copper complexes. Depending on the reaction conditions, isolated clusters ([Cu4(S-thiaz)4(PR3)2] (PR3 = PPh3 (1), PEt2Ph (2), PEt3 (3)), oligomeric compounds ([Cu4(S-thiaz)4]2 (4) and [Cu4(S-thiaz)4]4 (5)), or a one-dimensional polymer ([Cu4(S-thiaz)4]∞ (6)) are formed. The structures of the compounds 2–5 have been determined by single crystal X-ray analysis.Key words: copper, 2-mercaptothiazoline, single crystal X-ray analysis.