Kinetics, Mechanism and Theoretical Studies of Norbornene-Ethylene Alternating Copolymerization Catalyzed by Organopalladium(II) Complexes Bearing Hemilabile α-Amino-pyridine.

ABSTRACT: Cationic methylpalladium complexes bearing hemilabile bidentate α-amino-pyridines can serve as effective precursors for catalytic alternating copolymerization of norbornene (N) and ethylene (E), under mild conditions. The norbornyl palladium complexes in the formula of {[RHNCH₂(o-C₆H₄N)]Pd(C₇H₁₀Me)(NCMe)}(BF₄) (R = ⁱPr (2a), ^tBu (2b), Ph (2c), 2,6-Me₂C₆H₃ (2d), 2,6-ⁱPr₂C₆H₃ (2e)) were synthesized via single insertion of norbornene into the corresponding methylpalladium complexes 1a-1e, respectively. Both square planar methyl and norbornyl palladium complexes exhibit facile equilibria of geometrical isomerization, via sterically-controlled amino decoordination-recoordinat

SUBMITTER: Yu KH 

PROVIDER: S-EPMC6152412 | biostudies-literature | 2017 Jun

REPOSITORIES: biostudies-literature