High resolution solid-state n.m.r. studies of quadrupolar nuclei: quadrupole-induced shifts in variable-angle sample-spinning of a borosilicate glass

Abstract

We report the first observation of field-dependent quadrupole-induced shifts in variable-angle sample-spinning n.m.r. spectra of the ¹¹B nucleus (I= 3/2) in a borosilicate glass: results indicate that differences in electric quadrupole coupling constant may be used in variable-angle sample-spinning n.m.r. studies at low magnetic field strengths to provide highly resolved spectra of some non-integral spin quadrupolar nuclei.