Elucidating metal (Zr, Hf, Th, U)-hydride covalency using 1H NMR chemical shifts and density functional calculations

Metal–ligand covalency is not fully understood for the actinides and studies comparing group IV transition metals with isostructural actinide complexes are limited. Here, the authors report [(C5Me5)2(2,6-iPr2C6H3O)M(H)] (M = Hf, Th, and U) complexes and compare them to a Zr analogue, exploring the differences between transition metal and actinide bonding situations.