P. Braunstein, Y. Chauvin, Sophie Mercier
2005
Citations
0
Influential Citations
27
Citations
Journal
Comptes Rendus Chimie
Abstract
Abstract Nickel(II) diphenylphosphinoenolate complexes have been prepared from (ortho-HX-substituted benzoylmethylene)triphenyl phosphoranes (X = NMe, NPh) and [Ni(1,5-cod)2] in the presence of a tertiary phosphine (PPh3 or P(p-C6H4F)3). An X-ray diffraction study of the complexes 10 and 16 establishes the presence of strong intramolecular hydrogen bonding between the enolate oxygen and the N–H function, as originally found in 11. This feature favours the formation of the desired shorter-chain-length products in the catalytic oligomerisation of ethylene. To cite this article: P. Braunstein et al., C. R. Chimie 8 (2005).