[2A03-05] Interenational sess.(5)

[2A03] Imido(niobium) Complex Catalysts for Olefin Metathesis Polymerization

○Kanchana Chatchaipaiboon¹, KOTOHIRO NOMURA¹ (1. Tokyo Metropolitan University)

In this presentation, we wish to introduce our explored results for syntehsis of various (arylimido)niobium-alkylidene compelxes, Nb(CHSiMe3)(NAr)(OR)(PMe3)2 [Ar = aryl; R = C(CF3)3, OC6F5 etc.], as catalysts for ring opening metatehsis polymerization of cyclic olefins (norbornene and the derivateves, cyclooctene etc.). These complexes exhbited the remarkable catalytic activites (e.g. TOF 236 sec-1) and effect of ligands toward the activity will be focused.

Keywords:niobium, metathesis polymerization, molecular catalysts