Bonding Interactions in Uranyl alpha-Diimine Complexes: A Spectroscopic and Electrochemical Study of the Impacts of Ligand Electronics and Extended Conjugation

Julie E Niklas, Katherine M Hunter, Anne Gorden

Research output: Contribution to journalArticlepeer-review

Abstract

Uranyl complexes of aryl-substituted α-diimine ligands gbha (UO2-1af) and phen-BIAN (UO2-2a-f) [gbha (1) = glyoxal bis(2-hydroxyanil); phen-BIAN (2) = N,N′-bis(iminophenol)acenaphthene; R = OMe (a), t-bu (b), H (c), Me (d), F (e), and naphthyl (f)] were designed, prepared, and characterized by X-ray diffraction, FT-IR, NMR, UV–vis, and electrochemical methods. These ligand frameworks contain a salen-type O–N–N–O binding pocket but are redox-noninnocent, leading to unusual metal complex behaviors. Here, we describe three solid-state structures of uranyl complexes UO2-1b, UO2-1c, and UO2-1f and observe manifestations of ligand noninnocence for the U(VI) complexes UO2-1b and UO2-1c. T
Original languageEnglish
Pages (from-to)15088--15100
JournalInorganic Chemistry
DOIs
StatePublished - 2019

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