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Title: Contributions of internal rotations to {beta}-deuterium isotope effects

Journal Article · · Journal of Physical Chemistry
 [1]
  1. Rutgers, the State Univ., Newark, NJ (United States)

Contributions to {beta}-deuterium isotope effects arising from internal rotations have been computed using complete anharmonic potentials for acetaldehyde, ethanol, and methyl acetate. The temperature dependence of the torsional contribution to the isotope effects was computed over 0-100 {degrees}C using both the complete potentials and the harmonic approximation to the torsional potentials. For the equilibrium comparison between acetaldehyde and methyl acetate, the torsional contribution to the {beta}-deuterium isotope effect was independent of temperature. The harmonic approximation was shown to be reliable in predicting isotope effects arising from torsional motions. 19 refs., 3 figs., 2 tabs.

Sponsoring Organization:
USDOE
OSTI ID:
379467
Journal Information:
Journal of Physical Chemistry, Vol. 96, Issue 3; Other Information: PBD: 6 Feb 1992
Country of Publication:
United States
Language:
English