Elimination of magnetic-susceptibility broadening in NMR using magic-angle sample spinning to measure chemical shifts inNbHx

Abstract

Magnetic-susceptibility broadening of hydrogen NMR spectra in $\mathrm{Nb}{\mathrm{H}}_x$ powders ($x=0.10\mathrm{} \mathrm{and} 0.17$) has been eliminated using magic-angle sample spinning. This has made it possible to measure two underlying hydrogen chemical-shift sites with shielding values of ${\alpha }_0=-12.0\mathrm{}\pm 0.5$ ppm and ${\beta }_0=+16.0\mathrm{}\pm 0.5$ ppm with respect to tetramethyl silane.