title: Poly[(μ5-3-carboxybenzene-1,2-dicarboxylato)lead(II)]: a helical lead(II) coordination polymer.
abstract: In the title polymer, [Pb(C9H4O6)]n, the asymmetric unit contains a monomer of a Pb(II) cation with a doubly deprotonated 3-carboxybenzene-1,2-dicarboxylate dianion (1,2,3-Hbtc(2-)). Each Pb(II) centre is seven-coordinated by seven O atoms of bridging carboxy/carboxylate groups from five 1,2,3-Hbtc(2-) ligands, forming a distorted pentagonal bipyramid. The Pb(II) cations are bridged by 1,2,3-Hbtc(2-) anions, yielding two-dimensional chiral layers. The layers are stacked above each other to generate a three-dimensional supramolecular architecture via a combination of C-H···O interactions. The thermogravimetric and optical properties are also reported.
authors.affiliation: College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, People's Republic of China.
authors.forename: Shao-Min
authors.initials: SM
authors.lastname: Cheng
authors.affiliation: College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, People's Republic of China.
authors.forename: Xian-Fei
authors.initials: XF
authors.lastname: Wang
authors.affiliation: College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, People's Republic of China.
authors.forename: Fang
authors.initials: F
authors.lastname: Yang
authors.affiliation: College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, People's Republic of China.
authors.forename: Hang
authors.initials: H
authors.lastname: Chen
authors.affiliation: College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, People's Republic of China.
authors.forename: Wen-Long
authors.initials: WL
authors.lastname: Liu
keywords: NLO properties; TGA analysis; benzene-1,2,3-tricarboxylic acid; chirality; crystal structure; photoluminescence; two-dimensional PbII coordination polymer