Accession Number : AD0271942

Title :   ON THE OCCURRENCE OF LARGE SECONDARY INTERMOLECULAR KINETIC ISOTOPE EFFECTS IN NONEQUILIBRIUM SYSTEMS

Corporate Author : WASHINGTON UNIV SEATTLE

Personal Author(s) : RABINOVITCH,B.S. ; CURRENT,J.H.

Report Date : DEC 1961

Pagination or Media Count : 1

Abstract : The existence of large normal secondary kinetic isotope effects in non-equilibrium systems produced by non-thermal methods of activation is discussed. This effect is illustrated in the production of chemically activated ethyl-d sub x radicals. The observed limiting average values for this system at 195 and 300 K and extrapolated to zero pressure were 1.9. A recent summary of secondary isotope effects for equilibrium thermal unimolecular systems gives an average value of 1.12/D atom (S. Seltzer. J. Am. Chem. Soc., 83:2625; 1961).

Descriptors :   *FREE RADICALS, *ISOTOPES, *REACTION KINETICS, ATOMS, CHEMICAL REACTIONS, DEUTERIUM, ETHYL RADICALS, LOW PRESSURE, MOLECULAR ASSOCIATION, THEORY

Distribution Statement : APPROVED FOR PUBLIC RELEASE