1.
Dalton Trans
; 51(28): 10690-10696, 2022 Jul 19.
Artigo
em Inglês
| MEDLINE
| ID: mdl-35166757
RESUMO
The N-heterocyclic olefin (NHO) ImMe4îCH2 (2) (ImMe4îCH2 = (MeCNMe)2CîCH2) was employed for the synthesis of the titanium complex 3 derived from an NHO ligand precursor. By reacting 2 with the bis(π-η5:σ-η1-pentafulvene)titanium complex 1a, the terminal ylidic methylene unit of 2 is deprotonated by the quaternary exocyclic carbon atom of one pentafulvene ligand of 1a yielding the titanium complex 3 which bears an anionic NHO ligand (ImMe4îCH-). 3 was characterized by NMR spectroscopy, single crystal X-ray diffraction and quantum chemical calculations. The latter highlight that 3 is best described as a titanium vinyl complex with significant contribution of the titanium alkylidene resonance structure.