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Titolo:
Pyridinylimine-based nickel(II) and palladium(II) complexes: preparation, structural characterization and use as alkene polymerization catalysts
Autore:
Laine, TV; Piironen, U; Lappalainen, K; Klinga, M; Aitola, E; Leskela, M;
Indirizzi:
Univ Helsinki, Dept Chem, Inorgan Chem Lab, FIN-00014 Helsinki, Finland Univ Helsinki Helsinki Finland FIN-00014 ab, FIN-00014 Helsinki, Finland
Titolo Testata:
JOURNAL OF ORGANOMETALLIC CHEMISTRY
fascicolo: 2, volume: 606, anno: 2000,
pagine: 112 - 124
SICI:
0022-328X(20000728)606:2<112:PNAPCP>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
ALPHA-DIIMINE CATALYSTS; LATE TRANSITION-METALS; ADDITION POLYMERIZATION; VINYLIC POLYMERIZATION; NORBORNENE DERIVATIVES; OLEFIN POLYMERIZATION; ETHYLENE POLYMERIZATION; FUNCTIONAL-GROUPS; (ETA(3)-ALLYL)PALLADIUM(II); OLIGOMERIZATION;
Keywords:
nickel; palladium; nitrogen ligand; crystal structures; polymerization; catalysis; ethylene; norbornene;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
61
Recensione:
Indirizzi per estratti:
Indirizzo: Laine, TV Borealis Polymers Oy, POB 330, FIN-06101 Porvoo, Finland Borealis Polymers Oy POB 330 Porvoo Finland FIN-06101 , Finland
Citazione:
T.V. Laine et al., "Pyridinylimine-based nickel(II) and palladium(II) complexes: preparation, structural characterization and use as alkene polymerization catalysts", J ORGMET CH, 606(2), 2000, pp. 112-124

Abstract

Preparation of four dimeric nickel(II) complexes and three monomeric palladium(II) complexes bearing didentate pyridinylimine ligands is described. The solid-state structures of these compounds have been determined by single-crystal X-ray diffraction. After activation with methylaluminoxane (MAO) the nickel compounds were used as catalysts in ethylene polymerization producing nearly linear or primarily methyl-branched polymers. The effect of ligand environment was most evident on degree of branching, while catalytic activity and molecular weight of the polymer were mon dependent on the general catalyst composition as well as reaction conditions. Activation of the dichloropalladium(II) complexes with MAO yields highly active catalysts for the polymerization of bicyclo[2.2.1]hept-2-ene (norbornene) whereas only lowconversions (<20%) were achieved with cationic compounds obtained from twoof the neutral palladium complexes by reaction with AgBF4. (C) 2000 Elsevier Science S.A. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/09/20 alle ore 01:00:21