Author/Authors :
Marcus Astner، نويسنده , , Jِrg and Weitzer، نويسنده , , Markus and Foxon، نويسنده , , Simon P. and Schindler، نويسنده , , Siegfried and Heinemann، نويسنده , , Frank W. and Mukherjee، نويسنده , , Jhumpa and Gupta، نويسنده , , Rajeev and Mahadevan، نويسنده , , Viswanath and Mukherjee، نويسنده , , Rabindranath، نويسنده ,
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 :
Copper complexes , Kinetics , Reactivity with dioxygen , Tridentate N-donor ligands , Bis-oxo-dicopper(III) species
