An alternative non-redox Ni(I) pathway in hydroaminomethylation: A theoretical perspective

[Ni(CO)4]+ as NiI Synthon: Synthesis and Characterization of NiI Half‐Sandwich and Sandwich Cations

“…Meanwhile, more than 280 Ni I compounds have been structurally characterized to date. [4] The increased investigation of Ni I chemistry over the last decades was primarily driven by their application in catalysis, [3,5] including CÀ C coupling [6] or hydroxylation reactions [7] and small molecule activation, [8] as well as the importance in biological systems. [4b,8b] Due to their odd electron number (d 9 ), Ni I complexes often form dimeric structures with a NiÀ Ni bond.…”

Mechanistic insights into facilitating reductive elimination from Ni(ii) species

“…On the other hand, low-valent Ni catalysts have exhibited remarkable compatibility with a diverse array of functional groups, facilitating the construction of complex molecular frameworks with high regioselectivity and stereoselectivity. 42,54,55 Generally, cross-coupling with C(sp 2 ) electrophiles is typically accessible with appropriate ancillary ligands to accelerate the reductive elimination from Ni(II) species. 56,57 Although catalytic C(sp 3 )-C(sp 3 ) cross-coupling via a Ni(0)/ Ni(II) redox couple remains challenging, it has attracted considerable interest over the past several years.…”