Proton-Coupled Electron Transfer at the Pu^5+/4+ Couple.

ABSTRACT: The synthesis and solution and solid-state characterization of [Pu⁴⁺(NPC)₄], 1-Pu, (NPC = [NP^tBu(pyrr)₂]^-; ^tBu = C(CH₃)₃; pyrr = pyrrolidinyl) and [Pu³⁺(NPC)₄][K(2.2.2.-cryptand)], 2-Pu, is described. Cyclic voltammetry studies of 1-Pu reveal a quasi-reversible Pu^4+/3+ couple, an irreversible Pu^5+/4+ couple, and a third couple evincing a rapid proton-coupled electron transfer (PCET) reaction occurring after the electrochemical formation of Pu⁵⁺. The chemical identity of the product of the PCET reaction was confirmed by independent chemical synthesis to be [Pu⁴⁺(NPC)₃(HNPC)][B(ArF₅)<

SUBMITTER: Otte KS 

PROVIDER: S-EPMC11311234 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature