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Understanding barriers to internal rotation in toluene, phenylsilane, and their cations

Book ·
OSTI ID:28086
;  [1]
  1. Univ. of Wisconsin, Madison, WI (United States). Dept. of Chemistry
Threshold photoionization spectra of toluene{sup +} and phenylsilane{sup +} using the new pulsed field ionization technique resolve internal rotor states. As in the neutral S{sub 0} and S{sub 1} states, sixfold barriers to internal rotation are small in the cations, < 25 cm{sup {minus}1}. Ab initio calculations support a donor-acceptor model that qualitatively explains why all sixfold barriers are small while some threefold barriers are much larger.
DOE Contract Number:
FG02-92ER14306
OSTI ID:
28086
Report Number(s):
CONF-940142--; ISBN 0-8194-1417-4
Country of Publication:
United States
Language:
English