Ion-molecule reactions and thermal isomerization of tricyclo[4.3.0.0(3.7)]nona-4,8-diene radical cations to tricyclo[4.2.1.0(4,9)]nona-2,7-diene radical cations in a gamma-irradiated frozen Freon matrix

Authors
Shchapin, IY Feldman, VI Belevskii, VN Khoroshutin, AV Bobylyova, AA
Citation
Iy. Shchapin et al., Ion-molecule reactions and thermal isomerization of tricyclo[4.3.0.0(3.7)]nona-4,8-diene radical cations to tricyclo[4.2.1.0(4,9)]nona-2,7-diene radical cations in a gamma-irradiated frozen Freon matrix, RADIAT PH C, 55(5-6), 1999, pp. 559-563
Citations number
9
Categorie Soggetti
Physics
Journal title
RADIATION PHYSICS AND CHEMISTRY
ISSN journal
0969806X → ACNP
Volume
55
Issue
5-6
Year of publication
1999
Pages
559 - 563
Database
ISI
SICI code
0969-806X(199908)55:5-6<559:IRATIO>2.0.ZU;2-H
Abstract
A four-step mechanism of isomerization of tricyclo[4.3.0.0(3,7)]nona-4,8-di ene radical cations to tricyclo[4.2.1.0(4,9)]nona-2,7-diene radical cations in gamma-irradiated frozen Freon-113 (CFCl2CF2Cl) matrix was suggested on the basis of ESR data. The rearrangement was found to occur via distonic fo rm of the radical cations with spin and charge separation. Furthermore, it was shown that the primary radical cations abstracts hydrogen atom from met hylene group of the parent molecule, whereas distonic radical cations react s via attachment to the C=C bond at 110-119 K. (C) 1999 Elsevier Science Lt d. All rights reserved.