Novel one-dimensional polymeric chlorocadmate sulfonium salts obtained from sulfonium ylides: Synthesis and structural characterization

Protonated sulfonium ylide chlorocadmate compounds of type [(Me)(2)SCH2C(O)C6H4R](+)[CdCl3](-)(R = H(1); p-Br (2); p-Me (3); p-OMe (4); p-NO2 (5)) were prepared by the reaction of alpha-keto stabilized sulfonium ylides (Me)(2)SCHC(O)C6H4R with CdC12-H2O in 1:2 M ratios using methanol as solvent. Characterization of the compounds by IR,H-1- and C-13 NMR spectroscopy indicated the absence of coordination of the protonated sulfonium ylide to the metal through either the carbon or oxygen atoms. The crystal structures of compounds 1 and 2 were both found to consist of organic cations, [(Me)(2)SCH2C(O)C6H4H4R](+) (R = H(1) and p-Br (2)) and infinite one-dimensional chains of formula [CdCl3]; In both structures each Cd atom is five-coordinate with square pyramidal coordination geometry. (C) 2013 Elsevier B.V. All rights reserved.