Synthesis and characterization of some organolead(IV) complexes with bidentate ligands

Abstract

Organolead(IV) complexes have been synthesized by the reactions of diorganolead dichloride with one and two equivalents of thiosemicarbazones of some heterocyclic aldehydes in the presence of one and two equivalents of lithium, respectively. The resulting complexes of the types R₂Pb(L)Cl and R₂PbL₂ (where R = C₆H₅; HL= R'CH:NNHC:S.NH₂, R' = C₅H₄N-, C₄H₃S- , C₄H₃O-, C₆H₅CHCH-) have been characterized by elemental analyses, molecular weight determination, IR, NMR (¹H and ¹³C) and X-ray diffraction studies. Trigonal bipyramidal and octahedral geometries have been proposed for R₂Pb(L)CI and R₂PbL₂ types of  complexes, respectively.