Dalton Transactions [ECMC]

Abstract:

The presence of a permethylated α-cyclodextrin (α-CD) cavity in a chelating P,N ligand promotes exclusive formation of 1 : 1 ligand/metal complexes. In MX₂ complexes, one of the two halido ligands is forced to reside inside the CD hollow while the second one is pointing outside. Unlike its cavity-free analogue, a Ni(II) complex of the CD ligand is a highly selective precatalyst for ethylene dimerisation (96% C₄ selectivity with up to 95% of 1-butene within the C₄ fraction).

Graphical Abstract:

Reference :

Yang Li, Katrin Pelzer, Damien Sechet, Geordie Creste, Dominique Matt, Pierre Braunstein, and Dominique Armspach

A cavity-shaped cis-chelating P,N ligand for highly selective nickel-catalysed ethylene dimerisation

Dalton Transactions, First published 21 Jul 2022 - DOI:10.1039/D2DT01553F

 

Contacts:

Dominique Armspach - équipe ECMC, Institut de Chimie (UMR 7177)