Indium(III), lead(II), gold(I) and copper(II) complexes with isophthaloylbis(thiourea) ligands

Reactions of 3,3,3′,3′-tetraethyl-1,1-isophthaloylbis(thiourea), H2L1a, with InCl3, Pb(acetate)2, [AuCl(PPh3)] and [CuCl(PPh3)]4 gave complexes of the compositions [In2(L1a-κO,S)3], [{Pb(L1a-κO,S)}2]∞, [{Au(PPh3)}2(L1a-κS)] and [{Cu(L1a-κO,S)}2], respectively. The products have been studied spectroscopically and by single-crystal X-ray diffraction. Depending on the specific requirements of the metal ions used, complexes of completely different basic structures have been obtained: a binuclear complex with two octahedrally coordinated indium atoms, a polymeric lead compound with two differently coordinated Pb2+ ions, a binuclear gold compound in which two {Au(PPh3)}+ building blocks are connected by a L1a2− ligand and a binuclear copper(II) complex with two cis-coordinated metal centers.

3,3,3′,3′-Tetraethyl-1,1-isophthaloylbis(thiourea), H2L1a, forms a structural manifold of metal complexes when it is reacted with InCl3, Pb(acetate)2, [AuCl(PPh3)] or [CuCl(PPh3)].Figure optionsDownload as PowerPoint slide