Oxidase studies of some benzimidazole diamide copper(II) complexes |
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Authors: | Farea Afreen Arnold Rheingold |
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Affiliation: | a Department of Chemistry, University of Delhi, Delhi 110 007, India b Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, m/c 0358, La Jolla, CA 92093-0358, USA |
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Abstract: | New bis benzimidazole diamide ligands, N,N′-bis(benzimidazolyl-2-methyl)-2,2′-thiadiethanamide (GBTAA), and N,N′-bis(benzimidazolyl-2-methyl)-3,3′-thiadipropanamide (GBTPA) have been synthesised and utilised to prepare copper(II) complexes with inner sphere ligands like Cl− and . One of the ligands, GBTAA, has been structurally characterised, while the other GBTPA is characterised via an unusual tetrabenzoate bridged dicopper polymeric structure wherein the ligand GBTPA bridges the two dicopper benzoate units. The coordination environment about each copper is five coordinate, while τ value is found to be 0.32 indicating a distorted square pyramidal geometry. The copper(II) complexes catalyse the quenching of superoxide radical generated electrochemically. |
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Keywords: | Dihydrochloride Tetracyanoethylene Copper(II) complexes Covalency Uncomplexed |
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