Unusual bridging modes for percholorate in a 2D polymeric lead(II) complex, {[Pb(bpy)(µ-OAc)]2(µ-O2ClO2)(µ-OClO2O)}n

Abstract

A lead(II) complex containing 2,2′-bipyridine (bpy), acetate and perchlorate ligands, [Pb(bpy)(CH3COO)(ClO4)] has been synthesized and characterized by elemental analysis, IR-, 1H NMR-, 13C NMR spectroscopy. Single crystal X-ray data show the complex is two dimensional polymeric as a result of an unusual perchlorate bi- and unidentate bridging with repeating dimeric {[Pb(bpy)(µ-OAc)]2(µ-O2ClO2)(µ-OClO2O)}n units. The Pb atom has an unsymmetrical eight-coordinate geometry with a coordination gap around the Pb(II) ion, possibly occupied possibly by a stereo-active lone pair of electrons on lead(II).