| Abstract: Two new coordination polymers with different architectures, [Co(bta)0.5(2,2′-bipy)(H2O)]n(1) and {[Cd2(bta)(H2biim)2(H2O)]·H2O}n(2) (H4bta=biphenyl-2,2′,6,6′-tetracarboxylic acid, 2,2′-bipy=2,2′-bipyridine and H2biim=1H,1′H-2,2′-biimidazole) have been hydrothermally prepared by the reaction of H4bta, the corresponding metal nitrate ions and second ligands, and characterized by X-ray diffraction. Both 1 and 2 are one-dimensional chains and crystallize in the monoclinic system with space group P21/c. The bta ligands in 1 and 2 adopt η6, μ4-hexadentate and η5, μ4-pentadentate coordination modes, respectively, and the corresponding angles of two benzene rings in the ligands of each compound are 64.80° and 64.86°, respectively. 1 and 2 exhibit high thermal stability up to 170 ℃ and 120 ℃, respectively. CCDC: 814921, 1; 814922, 2. |
