Reversible Intramolecular Electron Transfer Within a Ruthenium(III) Porphyrin-Ruthenium(II) Porphyrin pi-Cation Radical System Induced by Changes in Axial Ligation
Barley, M.H., David Dolphin, and James, B.R.
J. Chem. Soc., Chem. Commun.
Treatment of [RuL(AsPh3)2]+ (I) (H2L = octaethylporphyrin), generated in situ in CH2Cl2, with CO at 1 atm gave [Ru(II)(L)(CO)(AsPh3)]+ (II) through intramolecular electron transfer. By purging the solution of II with Ar I was regenerated; this reversibility was repeated with approximately 95% yield in either direction.