| Abstract: | Three polycarboxylate coordination polymers containing 2-(2-pyridyl)benzimidazole as co-ligand, Cu(Bdc)(2-PyBIm)] n (1), Cu(HBtc)(2-PyBIm)] n (2) and Cd2(HBtc)2(2-PyBIm)2] n ·; nH2O (3) (H2Bdc?=?1,4-benzenedicarboxylic acid; H3Btc?=?1,3,5-benzenetricarboxylic acid), have been synthesized and characterized by elemental analyses, IR spectra, TG-DSC and X-ray structural analyses. Complex 1 is a one-dimensional zigzag chain in which the Cu(II) is cis six-coordinated by two chelating carboxyl groups and a 2-PyBIm ligand. Complex 2 is a two-dimensional (4, 4) network in which H3Btc is partially deprotonated. Complex 3 has a three-dimensional framework in which one Cd(II) is six-coordinate and the other is seven-coordinate. All 2-PyBIm groups are neutral, chelating, bidentate ligands in 1–3. These complexes are quite thermally stable. The luminescence of 3 has also been investigated. |
