Nuclear magnetic resonance studies of1H in zirconium halide hydrides: Shielding tensors

摘要

The magnetic shielding tensors and Tast;2rsquo;s of1H have been determined at room temperature in ZrClH0.5, ZrBrH1.0, and ZrBrH0.5utilizing 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 rsquo;rsquo;sandwichlikersquo;rsquo; compounds has been inferred from isotropic shifts and from anisotropies.