From Ultraslow to Extremely Fast Dynamics in Sodium Nitrate: an 17O NMR Study
From Ultraslow to Extremely Fast Dynamics in Sodium Nitrate: an 17O NMR Study
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硝酸钠从超慢到极快的动力学:17O NMR 研究
DOI:
10.1007/s00723-020-01201-5
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发表时间:
2020
影响因子:
1
通讯作者:
R. Böhmer
中科院分区:
文献类型:
--
作者:
J. Beerwerth;R. Siegel;L. Hoffmann;L. S. Plaga;M. Storek;B. Bojer;J. Senker;W. Hiller;R. Böhmer
Increasing dynamics in solids featuring nuclei subjected to second-order quadrupolar interactions lead to central-transition spectra that undergo two consecutive line-shaped transitions. Conventional motional narrowing occurs when the molecular exchange rate is on the order of the strength of the dominant interaction. In a second step, the resulting intermediately narrowed spectra change further when the motion becomes faster than the Larmor precession rate, leading to terminally narrowed spectra that can display a residual quadrupolar shift. We derive analytic expressions for this shift and analyze the quadrupolar central-transition spectra in terms of CNsymmetrical cone models. Increasing the number of sites toN≥ 3, the terminally narrowed spectra remain unaltered, while the intermediately narrowed spectra remain unaltered only forN≥ 5. This finding relates to the different (cubic vs. icosahedral) symmetries that are required to average out the spatial second- and fourth-rank terms in the second-order quadrupolar interaction. Following recent work (Hung et al., Solid State Nucl Magn Reson 84:14–19, 2017),17O NMR is applied to examine the three-site rotation of the nitrate group in NaNO3. Line shapes are measured and analyzed, and in addition to prior work, satellite-transition and stimulated-echo experiments are carried out. The final-state amplitudes extracted from the latter are reproduced using model calculations. It is shown how two-dimensional exchange spectra relating toN-site cone motions can be decomposed in terms of effective two-site-jump spectra. This latter approach is successfully tested for NaNO3.
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DOI:
10.1021/jz501729d
发表时间:
2014-09
期刊:
The journal of physical chemistry letters
影响因子:
--
作者:
W. Wang;Bryan E. G. Lucier;V. Terskikh;W. Wang;Yining Huang
通讯作者:
W. Wang;Bryan E. G. Lucier;V. Terskikh;W. Wang;Yining Huang
DOI:
--
发表时间:
2001
期刊:
影响因子:
--
作者:
M. Witschas;H. Eckert;H.;A. Putnis;G. Korus;M. Jansen
通讯作者:
M. Jansen
DOI:
--
发表时间:
1985
期刊:
影响因子:
--
作者:
A. Samoson
通讯作者:
A. Samoson
影响因子:
6.1
作者:
R. Hajjar;Y. Millot;P. Man
通讯作者:
P. Man
DOI:
10.1063/1.4936416
发表时间:
2015-12
期刊:
The Journal of chemical physics
影响因子:
--
作者:
M. Adjei-Acheamfour;J. F. Tilly;Joachim Beerwerth;R. Böhmer
通讯作者:
M. Adjei-Acheamfour;J. F. Tilly;Joachim Beerwerth;R. Böhmer