Unexpected temperature dependence of 1H paramagnetic shift in MAS NMR of nickelocene

被引：0

作者：

Jiang, Xinbiao ^{[1
]}

Liu, Jiefan ^{[1
]}

Lou, Xiaobing ^{[1
]}

Hu, Bingwen ^{[1
]}

Shen, Ming ^{[1
]}

机构：

[1] East China Normal Univ, Sch Phys & Elect Sci, Shanghai Key Lab Magnet Resonance, State Key Lab Precis Spect, Shanghai 200241, Peoples R China

来源：

MAGNETIC RESONANCE LETTERS | 2024年 / 4卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Solid-state NMR; NMR thermometer; Paramagnetic NMR; Paramagnetic shift; SOLID-STATE NMR; CHEMICAL-SHIFT; PB-207; NMR; SPECTROSCOPY; THERMOMETER; VANADOCENE; ACCURATE; DYNAMICS; NITRATE; SAMPLE;

D O I：

10.1016/j.mrl.2024.200119

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This work revisits the temperature dependence of 1 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 1 H 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 d 1 H-T correlation under fast MAS rate. (c) 2024 The Authors. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. This is an open access article under the CC BY-NC-ND license (http:// creativecommons.org/licenses/by-nc-nd/4.0/).

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