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

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

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 MX 2 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-f...

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Veröffentlicht in:Dalton transactions : an international journal of inorganic chemistry 2022-08, Vol.51 (30), p.11226-11230
Hauptverfasser: Li, Yang, Pelzer, Katrin, Sechet, Damien, Creste, Geordie, Matt, Dominique, Braunstein, Pierre, Armspach, Dominique
Format: Artikel
Sprache:eng
Schlagworte:
Catalysis
Chelation
Chemical Sciences
Coordination chemistry
Coordination compounds
Cyclodextrins
Ethylene
Ligands
Organic chemistry
Selectivity
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Zusammenfassung: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 MX 2 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% C 4 selectivity with up to 95% of 1-butene within the C 4 fraction).
ISSN:1477-9226
1477-9234
DOI:10.1039/d2dt01553f