{"title":"1,1,1-三氟乙烷的振动谱","authors":"G. Nivellini, F. Tullini, A. Celli, M. Becucci","doi":"10.1039/A805068F","DOIUrl":null,"url":null,"abstract":"IR spectra of 1,1,1-trifluoroethane (HFC-143a) have been recorded at medium and high resolution. Raman spectra in polarization controlled experiments have also been measured. Comparison between the spectra recorded with the two techniques has made possible a reassignment of the vibrational spectrum of CH3CF3 in the range 200–3100 cm-1. Room-temperature and low-temperature gas-phase spectra were compared in order to assign a large number of hot bands due to the low lying fundamentals ν6 (A2, ca. 220 cm-1) and ν12 (E, 366cm-1). An unambiguous assignment for ν8 has been obtained, together with a reliable frequency for ν6, which is forbidden in both the IR and Raman.","PeriodicalId":17286,"journal":{"name":"Journal of the Chemical Society, Faraday Transactions","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":"{\"title\":\"Vibrational spectrum of 1,1,1-trifluoroethane\",\"authors\":\"G. Nivellini, F. Tullini, A. Celli, M. Becucci\",\"doi\":\"10.1039/A805068F\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"IR spectra of 1,1,1-trifluoroethane (HFC-143a) have been recorded at medium and high resolution. Raman spectra in polarization controlled experiments have also been measured. Comparison between the spectra recorded with the two techniques has made possible a reassignment of the vibrational spectrum of CH3CF3 in the range 200–3100 cm-1. Room-temperature and low-temperature gas-phase spectra were compared in order to assign a large number of hot bands due to the low lying fundamentals ν6 (A2, ca. 220 cm-1) and ν12 (E, 366cm-1). An unambiguous assignment for ν8 has been obtained, together with a reliable frequency for ν6, which is forbidden in both the IR and Raman.\",\"PeriodicalId\":17286,\"journal\":{\"name\":\"Journal of the Chemical Society, Faraday Transactions\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1998-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"5\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of the Chemical Society, Faraday Transactions\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1039/A805068F\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the Chemical Society, Faraday Transactions","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1039/A805068F","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
IR spectra of 1,1,1-trifluoroethane (HFC-143a) have been recorded at medium and high resolution. Raman spectra in polarization controlled experiments have also been measured. Comparison between the spectra recorded with the two techniques has made possible a reassignment of the vibrational spectrum of CH3CF3 in the range 200–3100 cm-1. Room-temperature and low-temperature gas-phase spectra were compared in order to assign a large number of hot bands due to the low lying fundamentals ν6 (A2, ca. 220 cm-1) and ν12 (E, 366cm-1). An unambiguous assignment for ν8 has been obtained, together with a reliable frequency for ν6, which is forbidden in both the IR and Raman.
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