{"title":"甲烷磺酸单晶、液体和水溶液的辐射分解","authors":"T.E. Eriksen, J. Lind, T. Gillbro","doi":"10.1016/0020-7055(76)90036-X","DOIUrl":null,"url":null,"abstract":"<div><p>A study of the radiolysis of monocrystalline, liquid and aqueous solutions of methane sulphonic acid is reported. E.S.R.-measurements on γ-irradiated single crystals show that two radicals ·CH<sub>2</sub>SO<sub>2</sub>(OH) and CH<sub>3</sub>ŻSO<sub>2</sub>(OH)<sup>−</sup> are formed. Sulphonic acid-water mixtures were investigated by pulse radiolysis. A short-lived transient absorption with maximum at 450 nm is assigned to the radical ion CH<sub>3</sub>ŻSO<sub>2</sub>(OH)<sup>−</sup> (<em>ϵ</em> = 1740 dm<sup>3</sup> mol<sup>−1</sup> cm<sup>−1</sup>). Two longer-lived transient absorptions at 263 and 347 nm in concentrated solution were shifted to 242 and 332 nm respectively with increasing water concentration.</p><p>The 242/263 nm absorption is ascribed to the ·CH<sub>2</sub>SO<sub>3</sub><sup>−</sup> radical and its protonated form and the 332/347 nm absorption to the CH<sub>3</sub>SO<sub>2</sub>· radical formed by the decomposition of the CH<sub>3</sub>ŻSO<sub>2</sub>(OH)<sup>−</sup> radical ion. The interpretation of E.S.R. and optical spectra is based on the assumption of a hydrogen bonding structure of the sulphonic acid.</p></div>","PeriodicalId":100688,"journal":{"name":"International Journal for Radiation Physics and Chemistry","volume":"8 6","pages":"Pages 655-659"},"PeriodicalIF":0.0000,"publicationDate":"1976-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-7055(76)90036-X","citationCount":"1","resultStr":"{\"title\":\"Radiolysis of monocrystalline, liquid and aqueous solutions of methane sulphonic acid\",\"authors\":\"T.E. Eriksen, J. Lind, T. Gillbro\",\"doi\":\"10.1016/0020-7055(76)90036-X\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>A study of the radiolysis of monocrystalline, liquid and aqueous solutions of methane sulphonic acid is reported. E.S.R.-measurements on γ-irradiated single crystals show that two radicals ·CH<sub>2</sub>SO<sub>2</sub>(OH) and CH<sub>3</sub>ŻSO<sub>2</sub>(OH)<sup>−</sup> are formed. Sulphonic acid-water mixtures were investigated by pulse radiolysis. A short-lived transient absorption with maximum at 450 nm is assigned to the radical ion CH<sub>3</sub>ŻSO<sub>2</sub>(OH)<sup>−</sup> (<em>ϵ</em> = 1740 dm<sup>3</sup> mol<sup>−1</sup> cm<sup>−1</sup>). Two longer-lived transient absorptions at 263 and 347 nm in concentrated solution were shifted to 242 and 332 nm respectively with increasing water concentration.</p><p>The 242/263 nm absorption is ascribed to the ·CH<sub>2</sub>SO<sub>3</sub><sup>−</sup> radical and its protonated form and the 332/347 nm absorption to the CH<sub>3</sub>SO<sub>2</sub>· radical formed by the decomposition of the CH<sub>3</sub>ŻSO<sub>2</sub>(OH)<sup>−</sup> radical ion. The interpretation of E.S.R. and optical spectra is based on the assumption of a hydrogen bonding structure of the sulphonic acid.</p></div>\",\"PeriodicalId\":100688,\"journal\":{\"name\":\"International Journal for Radiation Physics and Chemistry\",\"volume\":\"8 6\",\"pages\":\"Pages 655-659\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1976-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0020-7055(76)90036-X\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Journal for Radiation Physics and Chemistry\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/002070557690036X\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal for Radiation Physics and Chemistry","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/002070557690036X","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Radiolysis of monocrystalline, liquid and aqueous solutions of methane sulphonic acid
A study of the radiolysis of monocrystalline, liquid and aqueous solutions of methane sulphonic acid is reported. E.S.R.-measurements on γ-irradiated single crystals show that two radicals ·CH2SO2(OH) and CH3ŻSO2(OH)− are formed. Sulphonic acid-water mixtures were investigated by pulse radiolysis. A short-lived transient absorption with maximum at 450 nm is assigned to the radical ion CH3ŻSO2(OH)− (ϵ = 1740 dm3 mol−1 cm−1). Two longer-lived transient absorptions at 263 and 347 nm in concentrated solution were shifted to 242 and 332 nm respectively with increasing water concentration.
The 242/263 nm absorption is ascribed to the ·CH2SO3− radical and its protonated form and the 332/347 nm absorption to the CH3SO2· radical formed by the decomposition of the CH3ŻSO2(OH)− radical ion. The interpretation of E.S.R. and optical spectra is based on the assumption of a hydrogen bonding structure of the sulphonic acid.
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