loading . . . Elucidating metal (Zr, Hf, Th, U)-hydride covalency using 1H NMR chemical shifts and density functional calculations Communications Chemistry, Published online: 15 April 2026; doi:10.1038/s42004-026-02021-7Metalāligand 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. http://dlvr.it/TS3QXF