title: A new one-dimensional Zn(II) coordination polymer based on 2-[(1H-imidazol-1-yl)methyl]-1H-benzimidazole and benzene-1,2-dicarboxylate.
abstract: Multidentate N-heterocyclic compounds form a variety of metal complexes with many intriguing structures and interesting properties. The title coordination polymer, catena-poly[zinc(II)-bis{μ-2-[(1H-imidazol-1-yl)methyl]-1H-benzimidazole}-κ(2)N(3):N(3');N(3'):N(3)-zinc(II)-bis(μ-benzene-1,2-dicarboxylato)-κ(2)O(1):O(2);κ(3)O(1),O(1'):O(2)], [Zn2(C8H4O4)2(C11H10N4)2]n, has been synthesized by the reaction of Zn(NO3)2 with 2-[(1H-imidazol-1-yl)methyl]-1H-benzimidazole (imb) and benzene-1,2-dicarboxylic acid (H2bdic) under hydrothermal conditions. There are two crystallographically distinct imb ligands [imb(A) and imb(B)] in the structure which adopt very similar coordination geometries. The imb(A) ligand bridges two symmetry-related Zn1 ions, yielding a binuclear [(Zn1)2{imb(A)}2] unit, and the imb(B) ligand bridges two symmetry-related Zn2 ions resulting in a binuclear [(Zn2)2{imb(B)}2] unit. The above-mentioned binuclear units are further connected alternately by pairs of bridging bdic(2-) ligands, forming an infinite one-dimensional chain. These one-dimensional chains are further connected through N-H···O hydrogen bonds, leading to a two-dimensional layered structure. In addition, the title polymer exhibits good fluorescence properties in the solid state at room temperature.
authors.affiliation: Department of Chemical Engineering, Henan Polytechnic Institute, 473009 Nanyang, Henan, People's Republic of China.
authors.forename: Qiu-Ying
authors.initials: QY
authors.lastname: Huang
authors.affiliation: Department of Chemical Engineering, Henan Polytechnic Institute, 473009 Nanyang, Henan, People's Republic of China.
authors.forename: Wei
authors.initials: W
authors.lastname: Liu
authors.affiliation: Department of Chemical Engineering, Henan Polytechnic Institute, 473009 Nanyang, Henan, People's Republic of China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Yang
authors.affiliation: College of Chemistry and Molecular Engineering, Zhengzhou University, 450001 Zhengzhou, Henan, People's Republic of China.
authors.forename: Xiang-Ru
authors.initials: XR
authors.lastname: Meng
keywords: 2-[(1H-imidazol-1-yl)methyl]-1H-benzimidazole; IR analysis; benzene-1,2-dicarboxylate; crystal structure; fluorescence properties; one-dimensional ZnII coordination polymer; thermostability