Activation Energies for an Intramolecular Electron Transfer Reaction

James V. Beitz; John R. Miller; Dan Meyerstein; Haim Cohen; Karl Wieghardt

doi:10.1021/ic50206a034

Activation Energies for an Intramolecular Electron Transfer Reaction

James V. Beitz, John R. Miller, Dan Meyerstein, Haim Cohen, Karl Wieghardt

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Abstract

Activation energies and solvent effects for the intramolecular electron transfer reaction from a ligated p-nitrobenzoate radical anion to a cobalt(III) center in the complexes formed by the reduction of I and II were measured. The rate of the intramolecular electron transfer reaction decreases with increasing solvent polarity. The activation energies range between 9.0 and 12.5 kcal/mol for complex I and between 13.3 and 19.5 kcal/mol for complex II. The rates always followed Arrhenius temperature dependence, even with 10⁴ changes in rate from room temperature to 203 K. Very large preexponential factors, 2 X 10¹¹-10¹⁸ s^-1, are calculated for these rate constants.

Original language	English
Pages (from-to)	966-968
Number of pages	3
Journal	Inorganic Chemistry
Volume	19
Issue number	4
DOIs	https://doi.org/10.1021/ic50206a034
State	Published - 1980
Externally published	Yes

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abstract = "Activation energies and solvent effects for the intramolecular electron transfer reaction from a ligated p-nitrobenzoate radical anion to a cobalt(III) center in the complexes formed by the reduction of I and II were measured. The rate of the intramolecular electron transfer reaction decreases with increasing solvent polarity. The activation energies range between 9.0 and 12.5 kcal/mol for complex I and between 13.3 and 19.5 kcal/mol for complex II. The rates always followed Arrhenius temperature dependence, even with 104 changes in rate from room temperature to 203 K. Very large preexponential factors, 2 X 1011-1018 s-1, are calculated for these rate constants.",

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year = "1980",

doi = "10.1021/ic50206a034",

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AU - Beitz, James V.

AU - Miller, John R.

AU - Meyerstein, Dan

AU - Cohen, Haim

AU - Wieghardt, Karl

PY - 1980

Y1 - 1980

N2 - Activation energies and solvent effects for the intramolecular electron transfer reaction from a ligated p-nitrobenzoate radical anion to a cobalt(III) center in the complexes formed by the reduction of I and II were measured. The rate of the intramolecular electron transfer reaction decreases with increasing solvent polarity. The activation energies range between 9.0 and 12.5 kcal/mol for complex I and between 13.3 and 19.5 kcal/mol for complex II. The rates always followed Arrhenius temperature dependence, even with 104 changes in rate from room temperature to 203 K. Very large preexponential factors, 2 X 1011-1018 s-1, are calculated for these rate constants.

AB - Activation energies and solvent effects for the intramolecular electron transfer reaction from a ligated p-nitrobenzoate radical anion to a cobalt(III) center in the complexes formed by the reduction of I and II were measured. The rate of the intramolecular electron transfer reaction decreases with increasing solvent polarity. The activation energies range between 9.0 and 12.5 kcal/mol for complex I and between 13.3 and 19.5 kcal/mol for complex II. The rates always followed Arrhenius temperature dependence, even with 104 changes in rate from room temperature to 203 K. Very large preexponential factors, 2 X 1011-1018 s-1, are calculated for these rate constants.

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JO - Inorganic Chemistry

JF - Inorganic Chemistry

IS - 4

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Activation Energies for an Intramolecular Electron Transfer Reaction

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