Metal mediated C–S rupture of heterocyclic thioamides : in situ generation of 2,2′-thio-di-2-imidazoline, 1,1′-dimethyl-2,2′-di-imidazolylsulfide, SO42− and their variable coordination to CuII

Abstract

Reactions of copper(I) halides with imidazolidine-2-thione and 1-methyl-1,3-imidazoline-2-thione in dmso involved C–S rupture in aerobic conditions and yielded a sulfate bridged polymer, [Cu^II{η²-N,N–(N₂C₃H₅)₂S}(μ-O,OSO₂)(η¹-OH₂)]_n1 and a sulfate chelated monomer, [Cu^II{η²-N,N–(N₂C₄H₅)₂S}(η²-O,OSO₂)(η¹-OH₂)] 2 {N,N–(N₂C₃H₅)₂S = 2,2′-thio-di-2-imidazoline, N,N–(N₂C₄H₅)₂S = 1,1′-dimethyl-2,2′-di-imidazolyl sulfide}. This variable coordination behavior of in situ generated sulfate is unprecedented in the literature.