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Ni(4-tBustb)3: A Robust 16-Electron Ni(0) Olefin Complex for Catalysis

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Nattmann,  Lukas
Research Group Cornellà, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Cornella,  Josep
Research Group Cornellà, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Citation

Nattmann, L., & Cornella, J. (2020). Ni(4-tBustb)3: A Robust 16-Electron Ni(0) Olefin Complex for Catalysis. Organometallics, 39(18), 3295-3300. doi:10.1021/acs.organomet.0c00485.


Cite as: http://hdl.handle.net/21.11116/0000-0007-9B0A-0
Abstract
Sixteen-electron Ni(0) complexes bearing trans-stilbene derivative ligands have been shown to display a high degree of stability toward oxidation in the solid state. A structural analysis of a unique family of tris Ni(0) stilbene complexes revealed a remarkable effect of the steric hindrance of the substituents at the para position of the stilbene unit to temperature, oxidation, and degradation in solution. From these analyses, Ni(4-tBustb)3 arose as a long-term air-, bench-. and temperature-stable Ni(0) complex. Importantly, Ni(4-tBustb)3 presents faster kinetic profiles and a broader scope as a Ni(0) source, thus outperforming the previously described Ni(4-CF3stb)3 in a variety of relevant Ni-catalyzed transformations.