KINETICS OF INTRAMOLECULAR ELECTRON-TRANSFER IN BINUCLEAR (NC)5FEII-CN-COIII(CHELATE) COMPLEXES BY PICOSECOND ABSORPTION-SPECTROSCOPY Academic Article uri icon

abstract

  • The rates of intramolecular electron transfer in the binuclear complexes (NC)5FeII-CN-CoIII(chelate) (where chelate = NBETA and HEDTA) have been measured directly using picosecond absorption spectroscopy. Excitation of the CoIII1T1g 1A1g band by a 530-nm 6-ps fwhm laser pulse is followed by rapid electron transfer from FeII resulting in FeIII, and CoII in the 2E state. The subsequent decay of FeIII occurs with a half-life of 150 ps. Our data indicate that the CoII2E state has 75-ps lifetime and experiences a low-spin to high-spin intersystem crossing to form the 4T1g ground state. The subsequent spin-permitted electron transfer back to the FeII species occurs in 95 ps. Curves calculated on the basis of this mechanism are in good agreement with the experimental data. 1982, American Chemical Society. All rights reserved.

published proceedings

  • JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

author list (cited authors)

  • REAGOR, B. T., KELLEY, D. F., HUCHITAL, D. H., & RENTZEPIS, P. M.

citation count

  • 11

complete list of authors

  • REAGOR, BT||KELLEY, DF||HUCHITAL, DH||RENTZEPIS, PM

publication date

  • December 1982