Enhanced Proton-Coupled Electron-Transfer Reactivity by a Mononuclear Nickel(II) Hydroxide Radical Complex.

ABSTRACT: The synthesis, characterization, and reactivity of a NiOH core bearing a tridentate redox-active ligand capable of reaching three molecular oxidation states is presented in this paper. The reduced complex [LNiOH]^2- was characterized by single-crystal X-ray diffraction analysis, depicting a square-planar NiOH core stabilized by intramolecular H-bonding interactions. Cyclic voltammetry measurements indicated that [LNiOH]^2- can be reversibly oxidized to [LNiOH]^- and [LNiOH] at very negative reduction potentials (-1.13 and -0.39 V vs ferrocene, respectively). The oxidation of [LNiOH]^2- to [LNiOH]^- and [LNiOH] was accomplished using 1 and 2 equiv of ferrocenium, respectively. Spectroscopic and computational characterization suggest that [LN

SUBMITTER: Ye D 

PROVIDER: S-EPMC11688665 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature