|
Daria A. Pomogailo, Oleg I. Gromov, Vladimir I. Pergushov, Ivan D. Sorokin, Mikhail Ya. Melnikov
Phototransformations
of 1,3-butadiene diepoxide radical cations in CF3CCl3at
77 K
Abstract
Abstract.The nature of radical
cations stabilized in irradiated frozen 1,3-butadiene diepoxide/CF3CCl3
solutions was determined via low-temperature UV/Vis spectroscopy,
electron paramagnetic resonance spectroscopy, and quantum chemistry. It was
found that the cyclic radical cations yielded as radiolysis products undergo
C—C bond cleavage in both oxirane cycles under the action of light with further
elimination of molecular formaldehyde resulting in distonic •CH2OC+CH2
radical cations.
Key words: radical cations, EPR, photochemistry,
oxiranes, 1,3-butadiene diepoxide, matrix stabilization, density functional
theory
Copyright (C) Chemistry Dept., Moscow State University, 2002
|
|
