Syntheses And Characterization Of Mixed-Ligands Lead(Ii) Complexes, [Pb(bpy)(CH₃COO)X] (X = I–, NO₃ –, and ClO₄ –), Crystal Structure Of [Pb(bpy)(NO₃)(CH₃COO)]N (A New 1-D Polymeric Compound)

Abstract

Lead(II) complexes with 2,2′-bipyridine (bpy) containing two different anions, [Pb(bpy)(CH 3 - COO)X] (X = I - , NO 3 - , and ClO 4 - ), have been synthesized and characterized by CHN elemental analysis, IR-, 1 H NMR- and 13 C NMR spectroscopy. The structure of [Pb(bpy)(ClO 4 )(CH 3 COO)]n was confirmed by X-ray crystallography. The complex is a one-dimensional polymer as a result of perchlorate ligand bridging. The Pb atom has an unsymmetrical eight-coordinate geometry. The arrangement of the bpy, acetate and nitrate ligands leaves a coordination gap at the Pb(II) ion, occupied probably by a stereo-active lone pair of electrons. There is a π- π stacking interaction between the parallel aromatic rings that may be formed by influence lone pair activity