title: Improved resolution and detection of 31P-Tl J-couplings at 21 T in 31P magic angle spinning NMR spectra of inorganic compounds containing Tl/Bi/P/S.
abstract: For crystalline compounds containing Tl, Bi, P, and S, greatly improved chemical shift resolution was observed in 31P magic angle spinning spectra obtained at 21 T relative to spectra obtained at 9.4 T. In Hz units, the spectral linewidths were not strongly dependent on the applied field, which may be a result of a significant contribution to the linewidths from transverse relaxation. Comparison of the spectra at the two different fields confirmed that spectral splittings were due to two-bond phosphorus-thallium J-coupling. These results suggest that ultra-high field may be a useful tool to improve spectral resolution of spin 12 nuclei in crystalline inorganic compounds.
authors: Department of Chemistry, Michigan State University, East Lansing, MI 48824, USA.
authors: Matthew A
authors: MA
authors: Gave
authors: Kermit M
authors: KM
authors: Johnson
authors: Mercouri G
authors: MG
authors: Kanatzidis
authors: David P
authors: DP
authors: Weliky