{"title":"一种新型蒽醌苷元的电子自旋共振谱。","authors":"B N Misra, S K Gupta, S D Sharma","doi":"10.1515/znb-1972-1115","DOIUrl":null,"url":null,"abstract":"The Electron Spin Resonance study of 1,3,5,8-tetrahydroxy 2,7-dimethyl anthraquinone known as Nodosin has been carried out at room temperature and at X-band. The compound gives a norrow ESR line. The measurements of lineshape, linewidth and g-value have been made. A theoretical computation of dipolar width as well as narrowing due to exchange has been carried out with the help of KUBO and TOMITA theory and finally a value for J, the exchange coupling parameter has been estimated. On the basis of these measurements Nodosin has been proposed to adopt an intermediate structure.","PeriodicalId":78857,"journal":{"name":"Zeitschrift fur Naturforschung. Teil B. Anorganische Chemie, organische Chemie, Biochemie, Biophysik, Biologie","volume":"27 11","pages":"1360-2"},"PeriodicalIF":0.0000,"publicationDate":"1972-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Electron spin resonance spectrum of a new anthraquinone aglycone (Nodosin).\",\"authors\":\"B N Misra, S K Gupta, S D Sharma\",\"doi\":\"10.1515/znb-1972-1115\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The Electron Spin Resonance study of 1,3,5,8-tetrahydroxy 2,7-dimethyl anthraquinone known as Nodosin has been carried out at room temperature and at X-band. The compound gives a norrow ESR line. The measurements of lineshape, linewidth and g-value have been made. A theoretical computation of dipolar width as well as narrowing due to exchange has been carried out with the help of KUBO and TOMITA theory and finally a value for J, the exchange coupling parameter has been estimated. On the basis of these measurements Nodosin has been proposed to adopt an intermediate structure.\",\"PeriodicalId\":78857,\"journal\":{\"name\":\"Zeitschrift fur Naturforschung. Teil B. Anorganische Chemie, organische Chemie, Biochemie, Biophysik, Biologie\",\"volume\":\"27 11\",\"pages\":\"1360-2\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1972-11-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Zeitschrift fur Naturforschung. Teil B. Anorganische Chemie, organische Chemie, Biochemie, Biophysik, Biologie\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1515/znb-1972-1115\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Zeitschrift fur Naturforschung. Teil B. Anorganische Chemie, organische Chemie, Biochemie, Biophysik, Biologie","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1515/znb-1972-1115","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Electron spin resonance spectrum of a new anthraquinone aglycone (Nodosin).
The Electron Spin Resonance study of 1,3,5,8-tetrahydroxy 2,7-dimethyl anthraquinone known as Nodosin has been carried out at room temperature and at X-band. The compound gives a norrow ESR line. The measurements of lineshape, linewidth and g-value have been made. A theoretical computation of dipolar width as well as narrowing due to exchange has been carried out with the help of KUBO and TOMITA theory and finally a value for J, the exchange coupling parameter has been estimated. On the basis of these measurements Nodosin has been proposed to adopt an intermediate structure.
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