http://www.cnr.it/ontology/cnr/individuo/prodotto/ID16758
Ligand effects in the non-alternating CO-ethylene copolymerization by palladium(II) catalysis (Articolo in rivista)
- Type
- Label
- Ligand effects in the non-alternating CO-ethylene copolymerization by palladium(II) catalysis (Articolo in rivista) (literal)
- Anno
- 2007-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1039/b711280g (literal)
- Alternative label
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Bettucci L.; Bianchini C.; Claver C.; Garcia Suarez E. J.; Ruiz A.; Meli A.; Oberhauser W. (literal)
- Pagina inizio
- Pagina fine
- Rivista
- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Istituto di Chimica deiComposti Organometallici (ICCOM-CNR),Area di RicercaCNRdi Firenze, viaMadonna delPiano 10, 50019, Sesto Fiorentino, Italy.
Dept. de Quimica Fisica i Inorganica, Facultat de Quimica, Universitat Rovira i Virgili, c/Marcel.li Domingo s/n, 43007, Tarragona, Spain. (literal)
- Titolo
- Ligand effects in the non-alternating CO-ethylene copolymerization by palladium(II) catalysis (literal)
- Abstract
- In this paper we report on a comparative study of the non-alternating CO-C2H4 copolymerization
catalyzed by neutral PdII complexes with the phosphine-sulfonate ligands bis(o-methoxyphenyl)-
phosphinophenylenesulfonate and bis(o-methoxyphenyl)phosphino-ethylenesulfonate. The former
ligand, featuring a lower skeletal flexibility, has been found to form more active catalysts as well as
produce polyketones with higher molecular weight and higher extra-ethylene incorporation. Operando
high-pressure NMR studies have allowed us to intercept, for the first time, PdII(phosphine-sulfonate)
b-chelates in the non-alternating copolymerization cycle, while model organometallic reactions have
contributed to demonstrate that PdII (phosphine-sulfonate) fragments do not form stable carbonyl
complexes. The opening of the b-chelates has been found to be a viable process by either comonomer,
which contrasts with the behaviour of PdII (chelating diphosphine) catalysts for the perfectly alternating
copolymerization (literal)
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- Autore CNR
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