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The polymerization of conjugated dialkenes to isotactic and syndiotactic polymers. Effect of ligands on the stereospecificity
Author(s) -
Porri Lido,
Giarrusso Antonino,
Ricci Giovanni
Publication year - 1991
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19910480120
Subject(s) - tacticity , monomer , polybutadiene , stereospecificity , polymer chemistry , polymerization , polymer , conjugated system , materials science , coordination polymerization , catalysis , chemistry , organic chemistry , copolymer , solution polymerization
On the basis of the results obtained with various substituted dialkenes, including deuterated monomers, an interpretation is presented of the mechanism of formation of the following polymers: 1,2 iso‐ and syndiotactic polybutadiene; cis‐1,4 iso‐ and syndiotactic polypentadiene; 1,2 syndiotactic poly(5‐methyl‐1,3‐pentadiene); trans‐1,4 threo diisotactic poly(2,4‐hexadiene). Evidence is given that the ligands bonded to the transition metal of the catalyst are important in determining the orientation of the incoming monomer.