title: Crystal structure of poly[di-chlorido-(μ-2,5-di-carb-oxy-benzene-1,4-di-carboxyl-ato-κ2O1:O4)bis-[μ-4'-(pyridin-3-yl)-4,2':6',4''-terpyridine-κ2N1:N4']dizinc].
abstract: In the title polymeric ZnIIcomplex, [Zn2(C10H4O8)Cl2(C20H14N4)2]n, the ZnIIcations are bridged by both 2,5-di-carb-oxy-benzene-1,4-di-carboxyl-ate dianions and 4'-(pyridin-3-yl)-4,2':6',4''-terpyridine ligands, forming ladder-like polymeric chains propagating along [1-10]. The Cl-anion further coordinates the ZnIIcation to complete a distorted tetra-hedral environment. In the 4'-(pyridin-3-yl)-4,2':6',4''-terpyridine ligand, the three sideward pyridine rings are twisted with respect to the central pyridine ring by 39.27 (12), 14.89 (13) and 3.36 (13)°, respectively. In the crystal, classical O-H⋯N hydrogen bonds and weak C-H⋯O and C-H⋯Cl hydrogen bonds link the chains into a three-dimensional supra-molecular architecture. π-π stacking is observed between the pyridine and benzene rings of neighbouring polymeric chains, with a centroid-to-centroid distance of 3.7280 (14) Å.
authors.affiliation: Department of Chemistry, Key Laboratory of Functional Inorganic Materials Chemistry of Anhui Province, Anhui University, Hefei 230601, People's Republic of China.
authors.forename: Yue
authors.initials: Y
authors.lastname: Tian
authors.affiliation: Department of Chemistry, Key Laboratory of Functional Inorganic Materials Chemistry of Anhui Province, Anhui University, Hefei 230601, People's Republic of China.
authors.forename: Sha-Sha
authors.initials: SS
authors.lastname: Xu
authors.affiliation: Department of Chemistry, Key Laboratory of Functional Inorganic Materials Chemistry of Anhui Province, Anhui University, Hefei 230601, People's Republic of China.
authors.forename: Jian
authors.initials: J
authors.lastname: Su
authors.affiliation: Department of Chemistry, Key Laboratory of Functional Inorganic Materials Chemistry of Anhui Province, Anhui University, Hefei 230601, People's Republic of China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Department of Chemistry, Key Laboratory of Functional Inorganic Materials Chemistry of Anhui Province, Anhui University, Hefei 230601, People's Republic of China.
authors.forename: Shao-Shuai
authors.initials: SS
authors.lastname: Zhao
authors.affiliation: Department of Chemistry, Key Laboratory of Functional Inorganic Materials Chemistry of Anhui Province, Anhui University, Hefei 230601, People's Republic of China.
authors.forename: Yu-Peng
authors.initials: YP
authors.lastname: Tian
keywords: 4′-(pyridin-3-yl)-4,2′:6′,4′′-terpyridine; coord­ination polymer; crystal structure; zinc(II) complex