S. Hayashi
[J. Alloys Comp., Vol.248, pp.66-69, 1997]

¹H Knight shifts in Mg₂NiH_x and MgH_x have been accurately determined by use of high-speed magic-angle-spinning NMR, which can reduce the line width caused by bulk magnetic susceptibility and dipole-dipole interaction, as shown in Figs. 1A and 1B. The shift values were -10.7 ppm, -4.1 ppm, 4.6 ppm, and 0.9 ppm from neat tetramethylsilane for alpha-Mg₂NiH_x, beta-Mg₂NiH₄, alpha-MgH_x and beta-MgH₂, respectively. Deuterium dilution applied to beta-Mg₂NiH₄ successfully reduced the dipolar line width, as shown in Fig. 1C, and no isotope effect was observed in the shift.