Syndiotactic‐specific polymerization of propene with a Ni‐based catalyst | Zendy

Pellecchia Claudio | Zendy; Zambelli Adolfo | Zendy

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Syndiotactic‐specific polymerization of propene with a Ni‐based catalyst

Author(s) -

Pellecchia Claudio,

Zambelli Adolfo

Publication year - 1996

Publication title -

macromolecular rapid communications

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.348

H-Index - 154

eISSN - 1521-3927

pISSN - 1022-1336

DOI - 10.1002/marc.1996.030170508

Subject(s) - methylaluminoxane , tacticity , propene , polymerization , polymer chemistry , catalysis , monomer , stereospecificity , coordination polymerization , polymer , materials science , triad (sociology) , metallocene , chemistry , radical polymerization , organic chemistry , psychology , psychoanalysis

Polymerization of propene at −78°C in the presence of a homogeneous catalytic system based on a Ni(II) diimine derivative and methylaluminoxane affords prevailingly syndiotactic crystalline poly(propylene) (rr triad content ≈80%). 13 C NMR analysis of the polymer microstructure indicates that the stereochemistry of the monomer insertion is controlled by the configuration of the methine carbon of the growing chain end ( unlike ‐1,3 asymmetric induction). This is the first example of stereospecific homopolymerization of propene promoted by a late transition metal catalyst.

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