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Mikhail Ya. Melnikov, Oleg I. Gromov, Vladimir I. Pergushov, Daria A. Pomogailo, Ivan D. Sorokin
Photochemistry
of radical cations of some organic oxygen-containing compounds in frozen
matrices
Abstract
Abstract. The review is dedicated to the photochemical reactions of radical
cations (RC) of various organic oxygen-containing compounds stabilized in
low-temperature matrices. The nature of RC and the products of their
photochemical reactions has been established via quantum chemistry,
electron paramagnetic resonance (EPR) and low-temperature optical spectroscopy.
Depending on the structure of the precursor molecule, various mechanisms of
photoconversion arise for these RC: charge transfer to matrix molecules, hydrogen
atom and proton transfer, isomerization, dissociation. This study allowed us to
posit that there is no correlation between the structure of the molecule of the
precursor molecule and the variety of available phototransformation channels
for the corresponding RC in frozen matrices.
Key words: excited radical cations, photochemical reactions, freon matrices,
reaction mechanisms
Copyright (C) Chemistry Dept., Moscow State University, 2002
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