Initial internal energy distributions of CdH (CdD) produced in the reaction of Cd(5s5p3P1) with H2, D2, and HD

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Abstract

Initial rotational quantum-state distributions of CdH (CdD) formed in the endoergic reactions of Cd(5s5p3P1) with H2, HD, and D2 were determined for reactants under thermal conditions at 325 K. Unusual isotope effects were observed, very similar to those reported for the analogous exoergic reactions of Zn(4s4p3P1). The results were successfully rationalized by a simple transition-state model in which small, “late” activation barriers for the decomposition of H—Cd—H, H—Cd—D, and D—Cd—D insertion intermediates were postulated.

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1

J.S. Guggenheim Memorial Fellow, 1984–1985.

2

University of Utah Graduate Research Fellow, 1984–1986.

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