Identifying a Terminal Nickel–Oxygen Complex Bearing an Unsymmetrical β-Diketiminate Ligand

JACS Au 2026 Open access

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Authors: Sihong Chen, Tzu-Hsien Yang, Yu-Lun Chang, Wei‐Syuan Lin, Chuan‐Hung Chuang, Cheng‐Han Yang, Hsing‐Yin Chen, M.-H. Tsai, Sodio C. N. Hsu
DOI: 10.1021/jacsau.6c00356
Cited by: 1
References: 57

Abstract

High Resolution Image Download MS PowerPoint Slide Nickel–oxygen species are proposed as key intermediates in various biological nickel-containing catalytic and enzymatic processes. We report the successful synthesis and crystallographic characterization of the first terminal nickel–oxygen complex featuring a tridentate N -aryl- N ′-methylpyridyl β-diketiminate ligand. This species can be formally classified as either a nickel-oxo (Ni III =O) or nickel-oxyl (Ni II –O • ) species, exhibiting dual bonding characteristics. The experimental observations and DFT calculations suggest the bonding is best described as a resonance hybrid of Ni III =O and Ni II –O • states, with the Ni II –O • form likely predominant.

Fields of Study & Subjects

Metal-Catalyzed Oxygenation Mechanisms Organometallic Complex Synthesis and Catalysis Metal complexes synthesis and properties

Publication details

Journal / source
JACS Au
Publisher
American Chemical Society (ACS)
Volume
6
Issue
5
Pages
2709–2714
Publication date
8 May 2026
Language
EN