Mono-organomercury and diorganothallium derivatives of rhodanine: Crystal structure of dimethyl(rhodaninato)thallium(III)

Abstract

The complexes HgR(Rd) and TIR 2(Rd) (R = Me, Ph; HRd = rhodanine) have been prepared from the reaction of the ligand with the appropriate organometallic hydroxide (Tl) or acetate (Hg). The crystal structure of TlMe 2(Rd) was obtained and shows that the thallium atom is coordinated by two oxygen atoms and a sulphur atom from three different ligands, as well as the two carbon atoms of the methyl groups. The compound crystallizes, forming a planar association along the plane defined by the crystallographic axes ac. Comparison of this compound with TlPh 2(Rd) and HgR(Rd) was undertaken using mass, IR, and multinuclear ( 1H, 13C, 199Hg, 205Tl) NMR spectra.