Syndio- and Isoselective Coordinative Chain Transfer Polymerization of Styrene Promoted by ansa-Lanthanidocene/ Dialkylmagnesium Systems - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Advanced Synthesis and Catalysis Année : 2011

Syndio- and Isoselective Coordinative Chain Transfer Polymerization of Styrene Promoted by ansa-Lanthanidocene/ Dialkylmagnesium Systems

Résumé

Combinations of the discrete neutral allyl ansa-lanthanidocenes {Me2C(Cp)(Flu)}Nd[1,3- (SiMe3)2C3H3] and rac-{Me2C(Ind)2}Y[1,3- (SiMe3)2C3H3] with di(n-butyl)magnesium constitute efficient binary catalytic systems for the stereocontrolled coordinative chain transfer polymerization of styrene, yielding near-perfect syndio- and isospecific polystyrenes, respectively, with high activities and productivities. By adjusting the amount of di(n-butyl)magnesium, up to 200 polymer chains can be generated per lanthabide center, and good control of the molecular weight features enables the tailoring of low to medium molecular weight polymers.

Dates et versions

hal-00632216 , version 1 (13-10-2011)

Identifiants

Citer

Yann Sarazin, Pierre de Frémont, Liana Annunziata, Michel Duc, Jean-François Carpentier. Syndio- and Isoselective Coordinative Chain Transfer Polymerization of Styrene Promoted by ansa-Lanthanidocene/ Dialkylmagnesium Systems. Advanced Synthesis and Catalysis, 2011, 535 (8), pp.1367-1374. ⟨10.1002/adsc.201100059⟩. ⟨hal-00632216⟩
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