Syntheses, structures, and properties of four Cu(II) complexes containing 2-(1H-imidazol-1-methyl)-1H-benzimidazole ligand

摘要

Four Cu(II)-containing complexes based on 2-(1H-imidazol-1-methyl)-1H-benzimidazole (imb), [Cu₂(imb)₂Cl₄] · 2CH₃OH (1), {[Cu(imb)(bdic2−)] · 1.5H₂O · DMF} _n (2), {[Cu(imb)(bdic2−)] · 2H₂O} _n (3), and {[Cu₃(imb)₂(Hbdc3−)₂] · 2H₂O} _n (4), where H₂bdic = 1,3-benzenedicarboxylic acid and H₄bdc = 1,2,4,5-benzenetetracarboxylic acid, have been synthesized and characterized by single-crystal diffraction. Dinuclear 1 is isolated by the reaction of imb with CuCl₂ · 2H₂O. When H₂bdic is added in the reaction with the other experimental conditions unchanged, 2 with a different structure is obtained. The [Cu₂(imb)₂] dinuclear units are linked through bdic2− groups to form a 2-D structure. The imb reacts with CuCl₂ · 2H₂O and H₂bdic at 80°C to give 3, which exhibits a 2-D (4,4) network. With the replacement of H₂bdic with H₄bdc in the above reaction, 4 is formed featuring a 2-D structure in which Hbdc3− is a six-connecting group. Their IR spectra and thermogravimetric analyses are also investigated.View full textDownload full textKeywordsCopper complex, 2-(1H-imidazol-1-methyl)-1H-benzimidazole, Crystal structure, Thermogravimetric analysisRelated var addthis_config = { ui_cobrand: "Taylor & Francis Online", services_compact: "citeulike,netvibes,twitter,technorati,delicious,linkedin,facebook,stumbleupon,digg,google,more", pubid: "ra-4dff56cd6bb1830b" }; Add to shortlist Link Permalink http://dx.doi.org/10.1080/00958972.2012.664273