期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 53, 期 1, 页码 299-304出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201306061
关键词
bioinorganic chemistry; copper; resonance Raman spectroscopy; X-ray absorption spectrocopy; X-ray diffraction
资金
- Deutsche Forschungsgemeinschaft [DFG FOR 1405]
- Fonds der Chemischen Industrie
- EvonikStiftung
- Bundesministerium fur Bildung und Forschung [BMBF 05K12GU1, 01IG09006]
The structures of two types of guanidine-quinoline copper complexes have been investigated by single-crystal X-ray crystallography, K-edge X-ray absorption spectroscopy (XAS), resonance Raman and UV/Vis spectroscopy, cyclic voltammetry, and density functional theory (DFT). Independent of the oxidation state, the two structures, which are virtually identical for solids and complexes in solution, resemble each other strongly and are connected by a reversible electron transfer at 0.33V. By resonant excitation of the two entatic copper complexes, the transition state of the electron transfer is accessible through vibrational modes, which are coupled to metal-ligand charge transfer (MLCT) and ligand-metal charge transfer (LMCT) states.
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