om0c00485_si_001.pdf (5.93 MB)
Ni(4‑tBustb)3: A Robust 16-Electron Ni(0) Olefin Complex for Catalysis
journal contribution
posted on 2020-09-10, 12:06 authored by Lukas Nattmann, Josep CornellaSixteen-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.
