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Z. Naturforsch. 2012,
67b, 783 – 790
doi:10.5560/ZNB.2012-0159
Syntheses, Structures and Luminescence Properties of Two Cd(II) Complexes Based on 2-((1H-1,2,4-Triazol-1-yl)methyl)-1H-benzimidazole and Aromatic Polycarboxylate Ligands
The College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450052, P. R. China
Reprint requests to Prof. Xiangru Meng. Fax: +86-0371-67783126. E-mail:
mxr@zzu.edu.cn
Received May 4, 2012 / published online August 20, 2012
Two new Cd(II) complexes, {[Cd(m-bdc)(tmb)(H2O)]·CH3OH}n (1) and {[Cd(t-bdc)(tmb)(H2O)]·2H2O·DMF}n (2), have been prepared by using 2-((1H-1,2,4-triazol-1-yl)methyl)-1H-benzimidazole (tmb) as a ligand in the presence of 1,3-benzenedicarboxylic acid (m-H2bdc) or 1,4-benzenedicarboxylic acid (t-H2bdc). Single-crystal X-ray diffraction exhibits that complex 1 displays a 2D structure constructed by tmb ligands in trans conformation and carboxylate groups in a chelating mode. The 2D structure of complex 2 is different from that of 1, in that the tmb ligands are in
cis conformation, and the carboxylate groups are in both unidentate or chelating coordination mode at the Cd(II) centers. The luminescence properties of 1 and 2 in the solid state at room temperature have been studied.
Key words: Cd(II) Complex, 2-((1H-1,2,4-Triazol-1-yl)methyl)-1H-benzimidazole, Crystal Structure, Luminescence, Benzenedicarboxylate