Three-Electron Nickel(I)/Nickel(0) Half-Bond
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Abstract
An (N-heterocyclic carbene)nickel(I) cation precursor reacts with the corresponding nickel(0) complex to form a dinickel(I,0) monocation. The Ni•••Ni distance in this cation is 0.93 Å shorter than in the analogous dinickel(0) complex. Although the solid-state structure shows equivalent Ni centers, DFT calculations indicate significant electronic localization. Reactions with CO and NO form mononuclear carbonyl and nitrosyl complexes. Oxidative addition of an aryl bromide results in C-arylation of the carbene ligands.
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National Science Foundation (CHE-1900035 to J.P.S.), Office of Naval Research (N00014-21-1-2230 to T.G.G.)
Date
2022
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