Transition Metal Complexes of N-Ethoxycarbonylthiophene-2-thiocarboxamide: Sulfur Abstraction from N-Ethoxycarbonylthiophene-2-thiocarboxamide by Ag(I), Cu(II), Pb(II), Hg(II), and Cd(II) Ions

Abstract

Reactions of N-ethoxycarbonylthiophene-2-thiocarboxamide (LH) with transition metal ions viz., Cu(II), Ni(II), Ag(I), Ru(III), Rh(I), Rh(III), Pd(II) and Pt(II) lead to the formation of complexes of formulae CuL₂, [NiL₂(py)] (in the presence of pyridine), AgL, [RuL₂Cl(H₂O)], [Rh(LH) (PPh₃)Cl]₂,[RhL₂Cl(H₂O)], PdL₂ and PtL₂, respectively. Reactions of LH with Ag(I), Cu(II), Pb(II), Hg(II) and Cd(II) under refluxing condition yield the corresponding sulfides and the oxidation product of ligand (LH), in case of Ag(I), was characterised as N-ethoxycarbonylthiophene-2-carboxamide. All metal complexes have been characterised on the basis of analytical, conductivity, spectroscopic and magnetic measurement studies and their tentative structures are proposed.