Reversible binding of dioxygen by the copper(I) complex with tris(2-dimethylaminoethyl)amine (Me6tren) ligand.
At low temperatures, the mononuclear copper(I) complex of the tetradentate tripodal aliphatic amine Me(6)tren (Me(6)tren = tris(2-dimethylaminoethyl)amine) [Cu(I)(Me(6)tren)(RCN)](+) first reversibly binds dioxygen to form a 1:1 Cu-O(2) species which further reacts reversibly with a second [Cu(I)(Me(6)tren)(RCN)](+) ion to form the dinuclear 2:1 Cu(2)O(2) adduct. The reaction can be observed using low temperature stopped-flow techniques. The copper superoxo complex as well as the peroxo complex were characterized by resonance Raman spectroscopy. The spectral characteristics and full kinetic and thermodynamic results for the reaction of [Cu(I)(Me(6)tren)(RCN)](+) with dioxygen are reported.
Weitzer
Markus
M
Institute of Inorganic and Analytical Chemistry, University of Giessen, Heinrich-Buff-Ring 58, D-35392 Giessen, Germany.
Schindler
Siegfried
S
Brehm
Georg
G
Schneider
Siegfried
S
Hörmann
Esther
E
Jung
Bernhard
B
Kaderli
Susan
S
Zuberbühler
Andreas D
AD