Application of the Marcus theory to description of the kinetics of reduction processes of organic cations View Full Text


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Article Info

DATE

1987-03

AUTHORS

V. I. Bogillo, V. V. Lobanov, I. P. Gragerov

ABSTRACT

The calculation of the rate constants for the processes in the reduction of diazonium, tropylium, verdazylium, and pyrylium cations by various organic electron donors, using the equations of the Marcus theory with allowance for the reorganization energy of only the outer coordination sphere, leads to values which are one to seven orders of magnitude higher than the experimental values. By quantum-chemical calculations it was shown that the reduction of diazonium and tropylium cations to the corresponding radicals is accompanied by a substantial change in the structure of the reagents. This leads to high values for the reorganization energy of the inner coordination sphere of the cations, which must be taken into account during calculation of the rate constants. The differences in the rate constants of the processes of direct electron transfer from the electron donors to the organic cations and the recombination of these reagents depend on the dissociation energy of the bond of the cation with the donor leading to the electron transfer products. More... »

PAGES

158-163

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/bf00534575

DOI

http://dx.doi.org/10.1007/bf00534575

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1012871655


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