Reversible Binding of Dioxygen by the Copper(I) Complex with Tris(2-dimethylaminoethyl)amine (Me 6 tren) Ligand
2003; American Chemical Society; Volume: 42; Issue: 6 Linguagem: Inglês
10.1021/ic025941m
ISSN1520-510X
AutoresMarkus Weitzer, Siegfried Schindler, G. Brehm, Siegfried Schneider, Esther Hörmann, Bernhard Jung, Susan Kaderli, Andreas D. Zuberbühler,
Tópico(s)Porphyrin and Phthalocyanine Chemistry
ResumoAt 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.
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