A new one-dimensional Cd-II coordination polymer with a two-dimensional layered structure incorporating 2-[(1H-imidazol-1-yl)methyl]-1H-benzimidazole and benzene-1,2-dicarboxylate ligands

作者：Huang, Qiu-Ying^*; Lin, Xiao-Yi; Meng, Xiang-Ru

来源：Acta Crystallographica Section C-Structural Chemistry, 2016, 72(6): 480-+.

DOI：10.1107/S2053229616007658

• one-dimensional cadmium(II) coordination polymer
• two-dimensional layered structure
• 2-[(1H-imidazol-1-yl)methyl]-1H-benzimidazole
• benzene-1,2-dicarboxylate
• fluorescence properties
• crystal structure.

The N-heterocyclic ligand 2-[(1H-imidazol-1-yl)methyl]-1H-benzimidazole (imb) has a rich variety of coordination modes and can lead to polymers with intriguing structures and interesting properties. In the coordination polymer catena-poly[[cadmium(II)-bis[mu-benzene-1,2-dicarboxylato-kappa O-4(1),O-1':O-2,O-2']-cadmium(II)-bis{mu-2-[(1H-imidazol-1-yl)methyl]-1H-benzimidazole}-kappa N-2(2):N-3;-kappa N-2(3):N-2] dimethylformamide disolvate], {[Cd(C8H4O4)(C11H10N4)]center dot C3H7NO}(n), (I), each Cd-II ion exhibits an irregular octahedral CdO4N2 coordination geometry and is coordinated by four O atoms from two symmetry-related benzene-1,2-dicarboxylate (1,2-bdic(2-)) ligands and two N atoms from two symmetry-related imb ligands. Two Cd-II ions are connected by two benzene-1,2-dicarboxylate ligands to generate a binuclear [Cd-2(1,2-bdic)(2)] unit. The binuclear units are further connected into a one-dimensional chain by pairs of bridging imb ligands. These one-dimensional chains are further connected through N-H center dot center dot center dot O hydrogen bonds and pi-pi interactions, leading to a two-dimensional layered structure. The dimethylformamide solvent molecules are organized in dimeric pairs via weak interactions. In addition, the title polymer exhibits good fluorescence properties in the solid state at room temperature.

• 出版日期2016-6
• 单位郑州大学; 河南理工大学