Affordable Access

Radical cations of branched alkanes as observed in irradiated solutions by the method of time-resolved magnetic field effect.

Authors
Type
Published Article
Journal
The Journal of Physical Chemistry A
1089-5639
Publisher
American Chemical Society
Publication Date
Volume
111
Issue
26
Pages
5839–5844
Identifiers
PMID: 17566993
Source
Medline

Abstract

Spin dynamics in radical ion pairs formed under ionizing irradiation of n-hexane solutions of two branched alkanes 2,3-dimethylbutane and 2,2,4-trimethylpentane has been studied by the method of time-resolved magnetic field effect in recombination fluorescence. Experimental curves of the magnetic field effect are satisfactorily described by assuming that the spin dynamics is determined by the hyperfine interactions in the radical cation (RC) of branched alkane under study with hyperfine coupling (HFC) constants averaged by internal rotations of RC fragments. The HFC constants determined from the magnetic field effect curves are close to those estimated within DFT B3LYP approach. Analysis of the results indicates that at room temperature the lifetimes of the RC of the studied branched alkanes amount to, at least, tens of nanoseconds.

There are no comments yet on this publication. Be the first to share your thoughts.

Statistics

Seen <100 times
0 Comments
F