{"title":"分子的音响。第7部分。-某些2-卤代甲基-1,3-二恶烷的环反转和内旋","authors":"G. Eccleston, B. Walsh, E. Wyn-Jones, H. Morris","doi":"10.1039/TF9716703223","DOIUrl":null,"url":null,"abstract":"A double ultrasonic relaxation has been observed in some 2-halomethyl-1,3-dioxans. Using n.m.r., infra-red and previous knowledge of the ultrasonic relaxation behaviour of simple 1,3-dioxans the two relaxations have been assigned, in turn, to the perturbation of conformational equilibria involving ring inversion and internal rotation. From the temperature dependence of the relaxation times the barriers opposing these conformational changes have been derived.","PeriodicalId":23290,"journal":{"name":"Transactions of The Faraday Society","volume":"67 1","pages":"3223-3229"},"PeriodicalIF":0.0000,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1039/TF9716703223","citationCount":"6","resultStr":"{\"title\":\"Molecular acoustics. Part 7.—Ring inversion and internal rotation in some 2-halomethyl-1,3-dioxans\",\"authors\":\"G. Eccleston, B. Walsh, E. Wyn-Jones, H. Morris\",\"doi\":\"10.1039/TF9716703223\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A double ultrasonic relaxation has been observed in some 2-halomethyl-1,3-dioxans. Using n.m.r., infra-red and previous knowledge of the ultrasonic relaxation behaviour of simple 1,3-dioxans the two relaxations have been assigned, in turn, to the perturbation of conformational equilibria involving ring inversion and internal rotation. From the temperature dependence of the relaxation times the barriers opposing these conformational changes have been derived.\",\"PeriodicalId\":23290,\"journal\":{\"name\":\"Transactions of The Faraday Society\",\"volume\":\"67 1\",\"pages\":\"3223-3229\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1971-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1039/TF9716703223\",\"citationCount\":\"6\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Transactions of The Faraday Society\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1039/TF9716703223\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Transactions of The Faraday Society","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1039/TF9716703223","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Molecular acoustics. Part 7.—Ring inversion and internal rotation in some 2-halomethyl-1,3-dioxans
A double ultrasonic relaxation has been observed in some 2-halomethyl-1,3-dioxans. Using n.m.r., infra-red and previous knowledge of the ultrasonic relaxation behaviour of simple 1,3-dioxans the two relaxations have been assigned, in turn, to the perturbation of conformational equilibria involving ring inversion and internal rotation. From the temperature dependence of the relaxation times the barriers opposing these conformational changes have been derived.
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