๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Spinning-frequency-dependent linewidths in 1H-decoupled 13C magic-angle spinning NMR spectra

โœ Scribed by Toshihito Nakai; Charles A. McDowell


Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
453 KB
Volume
227
Category
Article
ISSN
0009-2614

No coin nor oath required. For personal study only.

โœฆ Synopsis


The broadenings observed in "C MAS NMR spectra, which depend on the sample-spinning speed, were studied, using polycrystalline adamantane. Not only was a monotonic increase of the linewidths with the increase of the spinning frequency observed, but also a novel resonant feature was found. The phenomena were interpreted as originating from rotary-resonance "C-'H recoupling.


๐Ÿ“œ SIMILAR VOLUMES


Anomalous Rotational Resonance Spectra i
โœ M. Helmle; Y.K. Lee; P.J.E. Verdegem; X. Feng; T. Karlsson; J. Lugtenburg; H.J.M ๐Ÿ“‚ Article ๐Ÿ“… 1999 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 223 KB

Magic-angle spinning NMR spectra of samples containing dilute spin-1 2 pairs display broadenings or splittings when a rotational resonance condition is satisfied, meaning that a small integer multiple of the spinning frequency matches the difference in the two isotropic shift frequencies. We show ex

Spinning Sidebands in Slow-Magic-Angle-S
โœ Gang Wu; Boqin Sun; Roderick E. Wasylishen; Robert G. Griffin ๐Ÿ“‚ Article ๐Ÿ“… 1997 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 153 KB

Complex spinning sidebands are observed in magic-angle-spinning (MAS) NMR spectra arising from isolated tightly J-coupled spin pairs under slow spinning conditions. Such spinning sidebands are sensitive to the magnitude and relative orientation of the chemical-shift tensors, the dipolar-coupling ten