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Syntheses, characterization, and reactivity of copper complexes with tridentate N-donor ligands |
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| Authors: | Jö rg Astner,Simon P. Foxon,Frank W. Heinemann,Rajeev Gupta,Rabindranath Mukherjee |
| Affiliation: | a Institut für Anorganische und Analytische Chemie, Justus-Liebig-Universität Gießen, Heinrich-Buff-Ring 58, Germany b Institut für Anorganische Chemie, Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany c Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208 016, India |
| Abstract: | The reaction of dioxygen with the copper(I) complex of the tridentate ligand 1,1,4,7,7-pentamethyldiethylenetriamine (Me5dien) has been investigated using low-temperature stopped-flow techniques. The formation of a bis(μ-oxo)copper(III) complex as a reactive intermediate could be detected spectroscopically at low temperatures and a quantitative kinetic analysis was performed for this system. Crystal structures of the copper(II) complexes [(Me-bpa)Cu(Cl)2] (1), [{(Me-bpa)Cu(Cl)(ClO4)}2] (2), [{(MeL)Cu(Cl)(ClO4)}2] (3), and [(MeL)Cu(NCS)2] (4) (Me-bpa = N-methyl-[bis(2-pyridyl)methyl]amine; MeL = N-methyl-[(2-pyridyl)ethyl(2-pyridyl)methyl]amine) are reported. |
| Keywords: | Reactivity with dioxygen Bis-oxo-dicopper(III) species Tridentate N-donor ligands Kinetics Copper complexes |
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