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

•Protonated sulfonium ylide chlorocadmate compounds are structurally characterized for the first time.•Spectroscopy data demonstrates the absence of coordination of the protonated sulfonium ylide to the metal.•The crystal structures show organic cations and infinite one-dimensional chains of chlorocadmate.

Protonated sulfonium ylide chlorocadmate compounds of type [(Me)2SCH2C(O)C6H4R]+[CdCl3]-[(Me)2SCH2C(O)C6H4R]+[CdCl3]-(R = H(1); p-Br (2); p-Me (3); p-OMe (4); p-NO2 (5)) were prepared by the reaction of α-keto stabilized sulfonium ylides (Me)2SCHC(O)C6H4R with CdCl2⋅H2O in 1:2 M ratios using methanol as solvent. Characterization of the compounds by IR, 1H- and 13C 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)2SCH2C(O)C6H4R]+[(Me)2SCH2C(O)C6H4R]+(R = H(1) and p-Br (2)) and infinite one-dimensional chains of formula [CdCl3]n- In both structures each Cd atom is five-coordinate with square pyramidal coordination geometry.