Nuclear magnetic resonance studies of 1H in zirconium halide hydrides: Shielding tensors

Abstract
The magnetic shielding tensors and T*2’s of 1H have been determined at room temperature in ZrClH0.5, ZrBrH1.0, and ZrBrH0.5 utilizing multiple pulse NMR. In addition, stoichiometries have been determined by spin counting. Each proton shielding tensor exhibits a large anisotropy compared to those found in hydrocarbons and salts, and is similar to that found in ZrClH1.0. Site occupations of the protons in these ’’sandwichlike’’ compounds has been inferred from isotropic shifts and from anisotropies.