Journal of Radioanalytical and Nuclear Chemistry, volume 126, issue 1, pages 53-67
Stabilization and reactions of tetramethylurea radical cations in Freon matrices at 77 K: Intramolecular hydrogen transfer, ion-molecular reactions, and fragmentation by electron spin resonance study
Publication type: Journal Article
Publication date: 1988-01-01
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Impact factor: 1.6
ISSN: 02365731, 15882780
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Abstract
ESR spectra for γ-irradiated at 77 K solutions /0.02–16%/ of tetramethylurea /TMU/ in CFCl3 and Freon-113 have been studied. TMU+. radical cations radiolytically produced in dilute solutions have been shown to undergo intramolecular hydrogen transfer upon photobleaching resulting in CH2N= type radical. Evidence for intermolecular proton transfer in TMU+. radical cations after annealing to phase transition temperature /110–120 K/ in Freon-113 was obtained. Primary radical cations of TMU+. at their ground state take part in ion-molecular reaction via proton transfer. Molecular cations in their excited states may undergo fragmentation producing Me2N radicals, which were trapped in liquid phase by t-BuNO as a spin trap.
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Belevsky V. N., Belopushkin S. I. Stabilization and reactions of tetramethylurea radical cations in Freon matrices at 77 K: Intramolecular hydrogen transfer, ion-molecular reactions, and fragmentation by electron spin resonance study // Journal of Radioanalytical and Nuclear Chemistry. 1988. Vol. 126. No. 1. pp. 53-67.
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Belevsky V. N., Belopushkin S. I. Stabilization and reactions of tetramethylurea radical cations in Freon matrices at 77 K: Intramolecular hydrogen transfer, ion-molecular reactions, and fragmentation by electron spin resonance study // Journal of Radioanalytical and Nuclear Chemistry. 1988. Vol. 126. No. 1. pp. 53-67.
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TY - JOUR
DO - 10.1007/BF02164803
UR - https://doi.org/10.1007%2FBF02164803
TI - Stabilization and reactions of tetramethylurea radical cations in Freon matrices at 77 K: Intramolecular hydrogen transfer, ion-molecular reactions, and fragmentation by electron spin resonance study
T2 - Journal of Radioanalytical and Nuclear Chemistry
AU - Belevsky, V N
AU - Belopushkin, S I
PY - 1988
DA - 1988/01/01 00:00:00
PB - Springer Nature
SP - 53-67
IS - 1
VL - 126
SN - 0236-5731
SN - 1588-2780
ER -
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@article{1988_Belevsky,
author = {V N Belevsky and S I Belopushkin},
title = {Stabilization and reactions of tetramethylurea radical cations in Freon matrices at 77 K: Intramolecular hydrogen transfer, ion-molecular reactions, and fragmentation by electron spin resonance study},
journal = {Journal of Radioanalytical and Nuclear Chemistry},
year = {1988},
volume = {126},
publisher = {Springer Nature},
month = {jan},
url = {https://doi.org/10.1007%2FBF02164803},
number = {1},
pages = {53--67},
doi = {10.1007/BF02164803}
}
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Belevsky, V. N., and S I Belopushkin. “Stabilization and reactions of tetramethylurea radical cations in Freon matrices at 77 K: Intramolecular hydrogen transfer, ion-molecular reactions, and fragmentation by electron spin resonance study.” Journal of Radioanalytical and Nuclear Chemistry, vol. 126, no. 1, Jan. 1988, pp. 53-67. https://doi.org/10.1007%2FBF02164803.
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