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]

Yue Tian; Sha-Sha Xu; Jian Su; Yang Zhang; Shao-Shuai Zhao; Yu-Peng Tian

doi:10.1107/S2056989016016285

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: N^4']dizinc]

Acta Crystallogr E Crystallogr Commun. 2016 Oct 28;72(Pt 11):1663-1665. doi: 10.1107/S2056989016016285. eCollection 2016 Nov 1.

Authors

Yue Tian¹, Sha-Sha Xu¹, Jian Su¹, Yang Zhang¹, Shao-Shuai Zhao¹, Yu-Peng Tian¹

Affiliation

¹ Department of Chemistry, Key Laboratory of Functional Inorganic Materials Chemistry of Anhui Province, Anhui University, Hefei 230601, People's Republic of China.

Abstract

In the title polymeric Zn^II complex, [Zn₂(C₁₀H₄O₈)Cl₂(C₂₀H₁₄N₄)₂] _n , the Zn^II cations 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 Zn^II cation 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.

Keywords: 4′-(pyridin-3-yl)-4,2′:6′,4′′-terpyridine; coordination polymer; crystal structure; zinc(II) complex.