On the redox states of ruthenium porphyrin oxidation catalysts.
Tetraarylporphyrin ruthenium complexes [Ru(L)(aryl(4)Por)] (L = CO or PF(3); aryl = mesityl or 10-R'-bis-methano-octahydroanthracene-9-yl with R' = H, CF(3), OCH(3) or CH(3)) show a rich electrochemistry with at least five different stable oxidation states (including the parent state). The overall character of the redox behaviour is porphyrin-centred. However detailed spectroelectrochemical investigations using IR, UV/Vis/NIR and EPR spectroscopy (X- and K band) gave clear indication for ruthenium contributions.
Universität zu Köln, Institut für Organische Chemie, Greinstrasse 4, D-50939, Köln, Germany. berkessel@uni-koeln.de
Albrecht
A
Berkessel
Erkan
E
Ertürk
Patrick
P
Kaiser
Axel
A
Klein
Radoslaw M
RM
Kowalczyk
Biprajit
B
Sarkar