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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

Abstract

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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