Complexes of a-diimines with pentamethylcyclopentadienylrhodium in different oxidation states

, und . Zeitschrift fuer Anorganische und Allgemeine Chemie 619 (12): 1998--2005 (1993)


Cationic complexes Cp*RhCl(a-diimine)+ of trivalent rhodium and heterocyclic a-diimines or 1,4-disubstituted 1,4-diazabutadienes were isolated as hexafluorophosphates and subjected to electrochem. studies. Chem. or electrochem. two electron redn. yields intensely colored and highly reactive neutral complexes Cp*Rh(a-diimine) which are very easily oxidized and which can be reduced further at neg. potentials. The electronic structure of these compds. was studied using 1H-NMR and UV/Vis spectroscopy. Comparisons of charge transfer (CT) transition energies with redox potentials suggest very variable geometrical changes between ground and CT excited states. on SciFinder(R)

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