

Publisher: John Wiley & Sons Inc
E-ISSN: 1521-3757|127|21|6372-6375
ISSN: 0044-8249
Source: ANGEWANDTE CHEMIE, Vol.127, Iss.21, 2015-05, pp. : 6372-6375
Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.
Abstract
AbstractA Ni0‐NCN pincer complex featuring a six‐membered N‐heterocyclic carbene (NHC) central platform and amidine pendant arms was synthesized by deprotonation of its NiII precursor. It retained chloride in the square‐planar coordination sphere of nickel and was expected to be highly susceptible to oxidative addition reactions. The Ni0 complex rapidly activated ammonia at room temperature, in a ligand‐assisted process where the carbene carbon atom played the unprecedented role of proton acceptor. For the first time, the coordinated (ammine) and activated (amido) species were observed together in solution, in a solvent‐dependent equilibrium. A structural analysis of the Ni complexes provided insight into the highly unusual, non‐innocent behavior of the NHC ligand.
Related content






An Isolable, Photoswitchable N‐Heterocyclic Carbene: On‐Demand Reversible Ammonia Activation
ANGEWANDTE CHEMIE, Vol. 127, Iss. 39, 2015-09 ,pp. :

