[NiIII(OMe)]-mediated reductive activation of CO2 affording a Ni(κ1-OCO) complex
- National Tsing Hua Univ., Hsinchu (Taiwan)
- Chung Yuan Christian Univ., Taoyuan (Taiwan)
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- National Taiwan Normal Univ., Taipei (Taiwan)
- National Synchrotron Radiation Research Center, Hsinchu (Taiwan)
Here, carbon dioxide is expected to be employed as an inexpensive and potential feedstock of C1 sources for the mass production of valuable chemicals and fuel. Versatile chemical transformations of CO2, i.e. insertion of CO2 producing bicarbonate/acetate/formate, cleavage of CO2 yielding μ-CO/μ-oxo transition-metal complexes, and electrocatalytic reduction of CO2 affording CO/HCOOH/CH3OH/CH4/C2H4/oxalate were well documented. Herein, we report a novel pathway for the reductive activation of CO2 by the [NiIII(OMe)(P(C6H3-3-SiMe3-2-S)3)]– complex, yielding the [NiIII(κ1-OCO˙–)(P(C6H3-3-SiMe3-2-S)3)]– complex. The formation of this unusual NiIII(κ1-OCO˙–) complex was characterized by single-crystal X-ray diffraction, EPR, IR, SQUID, Ni/S K-edge X-ray absorption spectroscopy, and Ni valence-to-core X-ray emission spectroscopy. The inertness of the analogous complexes [NiIII(SPh)], [NiII(CO)], and [NiII(N2H4)] toward CO2, in contrast, demonstrates that the ionic [NiIII(OMe)] core attracts the binding of weak σ-donor CO2 and triggers the subsequent reduction of CO2 by the nucleophilic [OMe]– in the immediate vicinity. This metal–ligand cooperative activation of CO2 may open a novel pathway promoting the subsequent incorporation of CO2 in the buildup of functionalized products.
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Grant/Contract Number:
- AC02-76SF00515
- OSTI ID:
- 1251399
- Journal Information:
- Chemical Science, Vol. 1021, Issue C; ISSN 2041-6520
- Publisher:
- Royal Society of ChemistryCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Ein biomimetischer Nickelkomplex mit einem reduzierten, durch Formiatdeprotonierung erzeugten CO 2 -Liganden und sein Verhalten gegenüber CO 2
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journal | May 2018 |
A Biomimetic Nickel Complex with a Reduced CO 2 Ligand Generated by Formate Deprotonation and Its Behaviour towards CO 2
|
journal | May 2018 |
XANES/EPR Evidence of the Oxidation of Nickel(II) Quinolinylpropioamide and Its Application in Csp 3 −H Functionalization
|
journal | March 2019 |
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