Secondary alkene insertion and precision chain-walking: a new route to semicrystalline "polyethylene" from α-olefins by combining two rare catalytic events.
J Am Chem Soc
; 136(20): 7213-6, 2014 May 21.
Article
en En
| MEDLINE
| ID: mdl-24773453
ABSTRACT
While traditional polymerization of linear α-olefins (LAOs) typically provides amorphous, low T(g) polymers, chain-straightening polymerization represents a route to semicrystalline materials. A series of α-diimine nickel catalysts were tested for the polymerization of various LAOs. Although known systems yielded amorphous or low-melting polymers, the "sandwich" α-diimines 3-6 yielded semicrystalline "polyethylene" comprised primarily of unbranched repeat units via a combination of uncommon regioselective 2,1-insertion and precision chain-walking events.
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1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Compuestos Organometálicos
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Alquenos
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Iminas
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Níquel
Idioma:
En
Revista:
J Am Chem Soc
Año:
2014
Tipo del documento:
Article
País de afiliación:
Estados Unidos