Methylperoxy radicals were generated by the flash photolysis of azomethane-oxygen mixtures. The observed broadband spectrum of the CH302 radical is similar, but not identical to those reported previously. The CH:302 decay followed second-order kinetics a t high CH:jOz concentrations with k4, = (2.5
A Gaussian-2 ab initio study of isomeric CH3O2 and CH3O2+
โ Scribed by Yu-San Cheung; Wai-Kee Li
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 570 KB
- Volume
- 223
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
By means of a geometry optimization at the MP2/6-3 lG(d) level, the CH302 radicals have been found to exist in five isomeric forms. In order of decreasing stabilities, they are: HO-CH-OH ( ) > 0-CH,-OH (2) > CH&-0 (3) > CH2-O-OH (4) > CHI OH-O (5). On the other hand, there are six CHpO$ isomers: HO-CH-OH+ (l+ ) > CH2-O-OH+ (4+) > cyclioo-CH2-OH+ (2+) > CHs-O-O+ (3+ ) > CH,-OH-O+ (5+ ) > cyclioHO-CH-OH+ (6+). The Gaussian-2 predictions for the heats of formation at 298 K are in agreement with available experimental values.
๐ SIMILAR VOLUMES
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