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A combined NMR and electron spin resonance investigation of the (C5(CH3)5)Ti(CH2C6H5)3/B(C6F5)3 catalytic system active in the syndiospecific styrene polymerization

✍ Scribed by Alfonso Grassi; Claudio Pellecchia; Leone Oliva; Franco Laschi

Publisher: John Wiley and Sons
Year: 1995
Tongue: English
Weight: 443 KB
Volume: 196
Category: Article
ISSN: 1022-1352
DOI: 10.1002/macp.1995.021960411

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✦ Synopsis

The reaction of (C,(CH,),)Ti(CHZC6H,), with B(C,F,), in chlorobenzene at 25 "C produces a mixture of [(C,(CH,)5 )Ti(CH,C,H,),] + [B(CH2C6H5)(C6F,),] -(1) and Ti(II1) 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(II1) complex is the active species in the styrene syndiospecific polymerisation.

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