Activation energies for an intramolecular electron transfer reaction

Journal Article · Tue Apr 01 00:00:00 EST 1980 · Inorg. Chem.; (United States)

DOI:https://doi.org/10.1021/ic50206a034· OSTI ID:5224301

Beitz, J V ^[1]; Miller, J R; Cohen, H; Wieghardt, K; Meyerstein, D

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1. Argonne National Lab., IL

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 10/sup 4/ changes in rate from room temperature to 203 K. Very large preexponential factors, 2 x 10/sup 11/ - 10/sup 18/ s/sup -1/, are calculated for these rate constants.

• OSTI ID: 5224301
• Journal Information: Inorg. Chem.; (United States), Vol. 19:4
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
BENZOIC ACID
ELECTRON TRANSFER
COBALT COMPLEXES
NITRO COMPOUNDS
ACTIVATION ENERGY
EXPERIMENTAL DATA
ISOLATED VALUES
CARBOXYLIC ACIDS
COMPLEXES
DATA
DATA FORMS
ENERGY
INFORMATION
MONOCARBOXYLIC ACIDS
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
TRANSITION ELEMENT COMPLEXES
400201* - Chemical & Physicochemical Properties
400301 - Organic Chemistry- Chemical & Physicochemical Properties- (-1987)