Acta Cryst. (2009). E65, m709-m710  [ doi:10.1107/S1600536809019771 ]

catena-Poly[[aqua(3-methylbenzoato-²O,O')lead(II)]--3-methylbenzoato-⁴O:O,O':O']

J. Dai, J. Yang and X. An

Abstract: The reaction of lead(II) acetate and 3-methylbenzoic acid (MBA) in aqueous solution yielded the title polymer, [Pb(C₈H₇O₂)₂(H₂O)]_n. The asymmetric unit contains two Pb^II atoms, four MBA ligands and two water molecules. Each Pb^II cation is heptacoordinated and chelated by four carboxylate O atoms from two MBA ligands. The Pb atoms are bridged through the carboxylate O atoms from another two MBA ligands, leading to a central Pb₂O₂ core. The Pb-O bond lengths are in the range 2.325 (3)-2.757 (4) Å. The intra- and interdimer PbPb distances are 4.2942 (3) and 4.2283 (3) Å, respectively, indicating little direct metal-metal interaction. The coordinating water molecules and carboxylate O atoms are involved in extensive O-HO hydrogen-bonding interactions. The complex has an extended ladder-like chain structure and the chains are assembled by hydrogen bonds and - interactions [centroid-centroid distance = 3.6246 (3) Å] into a three-dimensional supramolecular structure.

Online 6 June 2009

Copyright © International Union of Crystallography
IUCr Webmaster