BRANCHING RATIOS FOR HYDROGEN-TRANSFER IN THE REACTIONS OF OD RADICALS WITH CH3SCH3 AND CH3SC2H5

被引：33
|
作者：
STICKEL, RE
ZHAO, Z
WINE, PH
机构：
[1] GEORGIA INST TECHNOL,SCH EARTH & ATMOSPHER SCI,ATLANTA,GA 30332
[2] GEORGIA INST TECHNOL,SCH CHEM & BIOCHEM,ATLANTA,GA 30332
来源：
CHEMICAL PHYSICS LETTERS | 1993年 / 212卷 / 3-4期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/0009-2614(93)89331-B
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：
Laser flash photolysis of DNO3/RSR'/R''H/N2 mixtures (R=CH3, R'=CH3 or C2H5, R''=n-hexyl or cyclohexyl) has been coupled with HDO detection by time-resolved tunable diode laser absorption spectroscopy to directly investigate the importance of C-H bond cleavage as the O2-independent pathway for the atmospherically interesting reactions of OD radicals with CH3SCH3 and CH3SC2H5. For both reactions the HDO yield is found to be approximately 0.84 +/- 0.15 (uncertainty is 2sigma), thus demonstrating conclusively that C-H bond cleavage predominates over C-S bond cleavage as a reaction pathway in the absence of O2.
引用
收藏
页码：312 / 318
页数：7
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