Palladium(II)-catalyzed alternating copolymerization and terpolymerization of carbon monoxide with [alpha]-Olefins: Formation of syndiotactic copolymers as well as terpolymers with both syndiotactic and atactic segments

Journal Article · Sun Feb 28 23:00:00 EST 1993 · Macromolecules; (United States)

DOI:https://doi.org/10.1021/ma00057a005· OSTI ID:6482873

Sen, Ayusman; Jiang, Zhaozhong ^[1]

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1. Pennsylvania State Univ., University Park (United States)

[Pd(1,10-phenanthroline)(MeCN)[sub 2]](BF[sub 4])[sub 2] and related complexes were found to catalyze the alternating copolymerization of styrene derivatives with carbon monoxide to form syndiotactic copolymers with strictly head-to-tail arrangement in the polymer backbone. The polymers, as formed, were highly crystalline although the crystallinity (but not the stereoregularity) was lost upon dissolution in acids followed by reprecipitation. The Pd(2) catalysts were also found to catalyze the terpolymerization of ethylene, propylene, [omega]-undecylenyl alcohol, and [omega]-methyl undecylenate with styrene and carbon monoxide. At high ratios of styrene to the second olefin, the terpolymers formed had structures consisting of syndiotactic alternating styrene-CO blocks randomly separated by atactic spacers formed by the alternating second olefin-CO units. The tactic styrene-CO blocks were lost with increasing content of the second olefin.

• DOE Contract Number: FG02-84ER13295
• OSTI ID: 6482873
• Journal Information: Macromolecules; (United States), Journal Name: Macromolecules; (United States) Vol. 26:5; ISSN MAMOBX; ISSN 0024-9297
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKENES
ALKYLATED AROMATICS
AROMATICS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYSIS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
COPOLYMERIZATION
COPOLYMERS
ELEMENTS
HYDROCARBONS
METALS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXIDES
OXYGEN COMPOUNDS
PALLADIUM
PLATINUM METALS
POLYMERIZATION
POLYMERS
STYRENE
SYNTHESIS
TRANSITION ELEMENTS