Xinbiao Jiang, Jiefan Liu, Xiaobing Lou, Bingwen Hu, Ming Shen
{"title":"Unexpected temperature dependence of 1H paramagnetic shift in MAS NMR of nickelocene","authors":"Xinbiao Jiang, Jiefan Liu, Xiaobing Lou, Bingwen Hu, Ming Shen","doi":"10.1016/j.mrl.2024.200119","DOIUrl":null,"url":null,"abstract":"<div><div>This work revisits the temperature dependence of <sup>1</sup>H paramagnetic shift in nickelocene as a potential nuclear magnetic resonance (NMR) thermometer under fast magic angle spinning (MAS) rate. Surprisingly, an abnormal temperature dependence of <sup>1</sup>H paramagnetic shift has been observed. In addition to a 1/<em>T</em> dependence term, a 1/<em>T</em><sup>2</sup> dependence term must be included to correctly describe the curvature behavior of the <em>δ</em><sup><sub>1</sub></sup><sub>H</sub>-<em>T</em> correlation under fast MAS rate.</div></div>","PeriodicalId":93594,"journal":{"name":"Magnetic Resonance Letters","volume":"4 4","pages":"Article 200119"},"PeriodicalIF":1.7000,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Magnetic Resonance Letters","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2772516224000263","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2024/3/27 0:00:00","PubModel":"Epub","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
This work revisits the temperature dependence of 1H paramagnetic shift in nickelocene as a potential nuclear magnetic resonance (NMR) thermometer under fast magic angle spinning (MAS) rate. Surprisingly, an abnormal temperature dependence of 1H paramagnetic shift has been observed. In addition to a 1/T dependence term, a 1/T2 dependence term must be included to correctly describe the curvature behavior of the δ1H-T correlation under fast MAS rate.
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