Isotope effects and excitation functions for the reactions of S(1D)+H2, D2 and HD

被引：98

作者：

Lee, SH ^{[1
]}

Liu, KP ^{[1
]}

机构：

[1] Acad Sinica, Inst Atom & Mol Sci, Taipei 10764, Taiwan

来源：

CHEMICAL PHYSICS LETTERS | 1998年 / 290卷 / 4-6期

关键词：

D O I：

10.1016/S0009-2614(98)00535-1

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Excitation functions for the title reactions were determined from 0.6 to 6 kcal/mol. Contrary to the analogous reaction of O(D-1), it appears that the reaction of S(D-1) proceeds solely through insertion over this energy range. Compared to other reactions, an intriguing H/D isotope effect was revealed. The propensity of the intramolecular H/D branching found under thermal conditions for A + HD reactions appears to be reverse for a supersonically cooled HD reagent. This finding implies that the reagent rotation could have profound influences on radical reactivity not only for an activated abstraction reaction, but for a barrierless inserted one. (C) 1998 Elsevier Science B.V. All rights reserved.

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页码：323 / 328

页数：6

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