Nonexponential 1H spin-lattice relaxation and methyl group rotation in molecular solids

被引：9
作者：
Beckmann, Peter A. [1 ]
机构：
[1] Bryn Mawr Coll, Dept Phys, Bryn Mawr, PA 19010 USA
来源：
SOLID STATE NUCLEAR MAGNETIC RESONANCE | 2015年 / 71卷
关键词：
Methyl rotation; Nonexponential spin-lattice relaxation; Molecular solids; ELECTRONIC-STRUCTURE CALCULATIONS; X-RAY-DIFFRACTION; THERMALLY ACTIVATED REORIENTATION; NUCLEAR MAGNETIC-RELAXATION; SINGLE-CRYSTALS; ORIENTATION DEPENDENCE; NMR; SYSTEMS; MOTION; DISTRIBUTIONS;
D O I：
10.1016/j.ssnmr.2015.07.001
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：
We report a quantitative measure of the nonexponential H-1 spin-lattice relaxation resulting from methyl group (CH3) rotation in six polycrystalline van der Waals solids. We briefly review the subject in general to put the report in context. We then summarize several significant issues to consider when reporting H-1 or F-19 spin-lattice relaxation measurements when the relaxation is resulting from the rotation of a CH3 or CF3 group in a molecular solid. (C) 2015 Elsevier Inc. All rights reserved.
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页码：91 / 95
页数：5
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