Electronic Structure and Reactivity Studies of a Nonsymmetric One-Electron Oxidized Cu^II Bis-phenoxide Complex.

ABSTRACT: The tetradentate mixed imino/amino phenoxide ligand (N-(3,5-di-tert-butylsalicylidene)-N'-(2-hydroxyl-3,5-di-tert-butylbenzyl))-trans-1,2-cyclohexanediamine (salalen) was complexed with Cu^II, and the resulting Cu complex (2) was characterized by a number of experimental techniques and theoretical calculations. Two quasi-reversible redox processes for 2, as observed by cyclic voltammetry, demonstrated the potential stability of oxidized forms, and also the increased electron-donating ability of the salalen ligand in comparison to the salen analogue. The electronic structure of the one-electron oxidized [2]⁺ was then studied in detail, and Cu K-edge X-ray Absorption Spectroscopy (XAS) measurements confirmed a Cu^II-phenoxyl radical complex

SUBMITTER: Chiang L 

PROVIDER: S-EPMC6301013 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature