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collision efficiency, B c

Synonym: de-energization efficiency

The collision efficiency, or de-energization efficiency, is defined by:
k −1 = B c k −1 sc
where k −1is the rate constant for a particular substance M when it brings about the de-energization process
C01164
and k −1 sc is the corresponding rate constant for a reference molecule M r that de-energizes A * on every collision; that is, the reference molecule M r undergoes strong collisions, and by definition has a collision efficiency B c of unity. The species A * is usually in a vibrationally-excited state, and A has energy less than that required for reaction to occur.
Source:
PAC, 1996, 68, 149 (A glossary of terms used in chemical kinetics, including reaction dynamics (IUPAC Recommendations 1996)) on page 159
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IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. doi:10.1351/goldbook.
Last update: 2014-02-24; version: 2.3.3.
DOI of this term: doi:10.1351/goldbook.C01164.
Original PDF version: http://www.iupac.org/goldbook/C01164.pdf. The PDF version is out of date and is provided for reference purposes only. For some entries, the PDF version may be unavailable.
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