title: The three-dimensional coordination polymer poly[[aqua[μ4-2,2'-(diazene-1,2-diyl)dibenzoato]lead(II)] 1,2-bis(pyridin-4-yl)ethylene hemisolvate].
abstract: A novel three-dimensional coordination polymer, {[Pb(C14H8N2O4)(H2O)]·0.5C12H10N2}n, has been synthesized by hydrothermal reaction of Pb(OAc)2·3H2O (OAc is acetate), 2,2'-(diazene-1,2-diyl)dibenzoic acid (H2L) and 1,2-bis(pyridin-4-yl)ethylene (bpe). The asymmetric unit contains a crystallographically independent Pb(II) cation, one L(2-) ligand, an aqua ligand and half a bpe molecule. Each Pb(II) centre is seven-coordinated by six O atoms of bridging-chelating carboxylate groups from L(2-) ligands and by one O atom from a coordinated water molecule. The Pb(II) cations are bridged by L(2-) ligands, forming [PbO2]n chains along the a axis. These chains are further connected by L(2-) ligands along the b and c axes to give a three-dimensional framework with a 4(12)6(3) topology. The channel voids are occupied by bpe molecules.
authors.affiliation: College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, People's Republic of China.
authors.forename: Fengji
authors.initials: F
authors.lastname: Ma
authors.affiliation: College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, People's Republic of China.
authors.forename: Caixia
authors.initials: C
authors.lastname: Yu
authors.affiliation: College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, People's Republic of China.
authors.forename: Huijuan
authors.initials: H
authors.lastname: Wang
authors.affiliation: College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, People's Republic of China.
authors.forename: Feng
authors.initials: F
authors.lastname: Zhao
keywords: 2,2′-(diazene-1,2-diyl)dibenzoic acid; PbII complex; crystal engineering; crystal structure; three-dimensional coordination polymer; topological analysis