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A combined NMR and electron spin resonance investigation of the (C<sub>5</sub>(CH<sub>3</sub>)<sub>5</sub>)Ti(CH<sub>2</sub>C<sub>6</sub>H<sub>5</sub>)<sub>3</sub>/B(C<sub>6</sub>F<sub>5</sub>)<sub>3</sub> catalytic system active in the syndiospecific styrene polymerization
72
Citations
26
References
1995
Year
EngineeringMagnetic ResonanceChemistryPolymersInorganic CompoundChemical EngineeringC 6Polymer ChemistryCombined NmrInorganic ChemistrySpin Resonance InvestigationSyndiospecific Styrene PolymerizationCatalysisStyrene Syndiospecific PolymerisationOrganometallic PolymerInorganic SynthesisPolymerisation Activity MeasurementsCoordination ComplexCoordination PolymerPolymerization KineticsPolymer ReactionNuclear Magnetic Resonance Spectroscopy
Abstract The reaction of (C 5 (CH 3 ) 5 )Ti(CH 2 C 6 H 5 ) 3 with B(C 6 F 5 ) 3 in chlorobenzene at 25°C produces a mixture of [(C 5 (CH 3 ) 5 )Ti(CH 2 C 6 H 5 ) 2 ] + [B(CH 2 C 6 H 5 )(C 6 F 5 ) 3 ] − ( 1 ) and Ti(III) complexes which have been characterized by NMR and electron spin resonance (ESR) spectroscopy, respectively. Spectroscopic data combined with polymerisation activity measurements suggest that a Ti(III) complex is the active species in the styrene syndiospecific polymerisation.
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