Chem. Commun., 2026, Accepted Manuscript DOI: 10.1039/D6CC03345H, Communication Tyler-Rayne Nero, Matilda Duffy, Kaitlyn S Engle, Cara O'Leary, Julie Niklas, Florian Kleemiss, Bess Vlaisavljevich, Henry Storms La Pierre Unsupported transuranic σ-hydrocarbyl complexes of Np4+ are unknown due to the redox instability of Np4+–C bonds. Here we report the first Np4+ σ-benzyl complex, [NpBn(NP)₃] (NP = [NP(1,2-bis-tBu-diamidoethane)(NEt2)]1-; Bn =...