Syntheses, characterization, and reactivity of copper complexes with tridentate N-donor ligands
摘要:
The reaction of dioxygen with the copper(I) complex of the tridentate ligand 1,1,4,7,7-pentamethyldiethylenetriamine (Me(5)dien) has been investigated using low-temperature stopped-flow techniques. The formation of a bis( mu-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. (c) 2007 Elsevier B.V. All rights reserved.