Lead(II) complexes of o-phthalate including a crystal structure of a novel 2D coordination polymer, [Pb(pht)(H2O)](n)

Three new o-phthalate (pht) lead(II) complexes were synthesized and characterized by elemental analyses, IR, H-1 NMR, and C-13 NMR spectroscopy. Single crystal X-ray structural analysis of [Pb(pht)(H2O)](n) shows the complex to be a novel 2D chain polymer as a result of phthalate bridging. Coordination number of Pb(II) is eight, PbO8, with a stereo-chemically active electron lone pair, and the coordination sphere is hemidirected. Packing of this compound in the solid state via pi-pi stacking and hydrogen bonding is discussed.