Reversible C-CN Bond Cleavage by a Formal Dinickel(I) Hydride Cation.

ABSTRACT: An N-heterocyclic carbene (NHC) ligand supports a stable [Ni₂H]⁺ core, formally dinickel(I). This diamagnetic cation complex features a bent hydride bridge and a Ni···Ni distance, 2.9926(5) Å, larger than two covalent radii. The cation displays weakly protic character, undergoing deprotonation by strong base to form the corresponding (NHC)nickel(0) dimer. Its reaction with aliphatic nitriles results in C-CN bond cleavage. The organic products of this reaction suggest that this bond-breaking step involves reactive nickel alkyl intermediates and occurs reversibly.

SUBMITTER: Cao Y 

PROVIDER: S-EPMC11600506 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature