Formation of macromolecular nitroxides (i.e., spin labeled polymer chains) has been detected by Electron Spin Resonance spectroscopy in the reaction of nitric oxide gas with several unsaturated polymers /synthetic polyisoprene, polybutadiene, poly(isoprene-co-isobutylene), poly(butadiene-co-styrene)
Spin trapping reactions with nitric oxides. III. Alkoxyalkylnitroxides and new nitrogen centered radicals
✍ Scribed by A. Rockenbauer; M. Győr; F. Tüdős
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- French
- Weight
- 227 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0040-4039
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✦ Synopsis
Subsequent trapping of photochemically generated alkyl and alkoxy radicals by nitric oxide yields alkoxyalkylnitroxide radicals. New types of nitrogen centered radicals have been detected and tentatively explained by reactions of nitrogen oxides N20, NO, N02, N203, N204 with alkyl and peroxide radicals.
In the preceding papers we investigated the spin trapping reactions of nitric oxide when alkyl radicals are generated photochemically', and when peroxy radicals are formed by oxidation of alkyl radicals2. In the present paper we account for our results of trapping alkoxy radicals with nitric oxide. We also report observation of a few other non-stable nitrogen centered radicals formed by scavenging alkyl and peroxy radicals with different compounds of nitrogen and oxygen, like N 0, 3 2 N02, N203, N204 etc., which can be present in the course of generation of nitric oxide , particularly, when oxygen is not completely purged out of the reactor.
📜 SIMILAR VOLUMES
By allowing dimethyl peroxide ( 10-4M) to decompose in the presence of nitric oxide (4.5 X lOW5M), nitrogen dioxide (6.5 X 10-5M) and carbon tetrafluoride (500 Torr), it has been shown that the ratio kzlkz, = 2.03 f 0.47: CH30 + NO -CH30NO (reaction 2) and CH30 + NO2 -CH30N02 (reaction 2'). Deviatio