Authors
Sandeep K. Padamati
Davide Anielone
Apparao Draksharapu
Gloria Primi
David J. Martin
Moniek Tromp
Marcel Swart
Wesley R. Browne
Date (dd-mm-yyyy)
2017-06-28
Title
Transient Formation and Reactivity of a High-Valent Nickel(IV) Oxido Complex
Journal
Journal of the American Chemical Society
Volume
139
Publication Year
2017-06-28
Pages
8718-8724
Issue number
25
Document type
Article
Faculty
Faculty of Science (FNWI)
Institute
Van 't Hoff Institute for Molecular Sciences (HIMS)
Abstract
A reactive high-valent dinuclear nickel(IV) oxido bridged complex is reported that can be formed at room temperature by reaction of [(L)(2)Ni(II)(2)(mu-X)(3)]X (X = Cl or Br) with NaOCl in methanol or acetonitrile (where L = 1,4,7 - trimethyl-1,4,7-triazacyclononane). The unusual Ni(IV) oxido species is stabilized within a dinuclear tris-mu-oxido-bridged structure as [(L)(2)Ni(IV)(2)(mu-O)(3)](2+). Its structure and its reactivity with organic substrates are demonstrated through a combination of UV-vis absorption, resonance Raman, H-1 NMR, EPR, and X-ray absorption (near-edge) spectroscopy, ESI mass spectrometry, and DFT methods, The identification. of a Ni(IV)-O species opens opportunities to control the reactivity of NaOCl for selective oxidations.
URL
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Permalink
https://hdl.handle.net/11245.1/423b666c-baaf-41d3-aac8-1a50d9059a0a