A carbon-13 CP/MAS NMR study of a double tert-butyl group rotation in the solid state using T1.rho. and line shape measurements
A carbon-13 CP/MAS NMR study of a double tert-butyl group rotation in the solid state using T1.rho. and line shape measurements
复制标题
使用 T1.rho 对固态双叔丁基旋转进行碳 13 CP/MAS NMR 研究。
DOI：
10.1021/ja00058a037
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发表时间：
1993
影响因子：
15
通讯作者：
J. H. Strange
中科院分区：
文献类型：
--
作者：
F. Riddell;S. Arumugam;K. Harris;M. Rogerson;J. H. Strange
固态 13 C CP/MAS NMR 技术的组合已用于研究顺式-4-叔丁基-1-(叔丁基磺酰基)环己烷中叔丁基的旋转速率。所采用的方法包括线形分析和 T 1ρ 测量，在 202-320 K 的温度范围内，速率在 6×10 3 和 2×10 7 s -1 之间。结果表明，CP/MAS 光谱的 13 C T 1ρ 测量可以给出分子内运动的定量信息，这与线形分析的结果一致。
A combination of solid state 13 C CP/MAS NMR techniques has been used to study the rates of rotation of the tert-butyl groups in cis-4-tert-butyl-1-(tert-butylsulfonyl)cyclohexane. The methods employed include line shape analysis and T 1ρ measurements with rates between 6×10 3 and 2×10 7 s -1 over the temperature range 202-320 K. It is demonstrated that 13 C T 1ρ measurements from CP/MAS spectra can give quantitative information on intramolecular motions that agree with that from line shape analysis