A new one-dimensional Zn-II coordination polymer based on 2-[(1H-imidazol-1-yl) methyl]-1H-benzimidazole and benzene-1,2-dicarboxylate

作者：Huang, Qiu-Ying^*; Liu, Wei; Yang, Yi; Meng, Xiang-Ru

来源：Acta Crystallographica Section C-Structural Chemistry, 2015, 71(11): 1017-U290.

DOI：10.1107/S205322961501966X

• one-dimensional Zn-II coordination polymer
• 2-[(1H-imidazol-1-yl) methyl]-1H-benzimidazole
• benzene-1,2-dicarboxylate
• crystal structure
• IR analysis
• thermostability
• fluorescence properties

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{mu-2-[(1H-imidazol-1-yl) methyl]-1H-benzimidazole}- kappa(2) N-3 : N-3'; N-3': N-3-zinc(II)-bis(mu-benzene-1,2-dicarboxylato)-kappa O-2(1) : O-2; O-3 O-1,O (1'): O-2], [Zn-2(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 (H(2)bdic) 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 [(Zn-2)(2){imb(B)}(2)] unit. The above-mentioned binuclear units are further connected alternately by pairs of bridging bdic2(-) ligands, forming an infinite one-dimensional chain. These one-dimensional chains are further connected through N-H center dot center dot center dot 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.

• 出版日期2015-11
• 单位郑州大学; 河南理工大学