The invention provides novel organometallic complexes useful as olefin metathesis catalysts. The complexes have an N-heterocyclic carbene ligand and a chelating carbene ligand associated with a Group 8 transition metal center. The molecular structure of the complexes can be altered so as to provide a substantial latency period. The complexes are particularly useful in catalyzing ring closing metathesis of acyclic olefins and ring opening metathesis polymerization of cyclic olefins.
本发明提供了一种新的有机
金属配合物,可用作烯烃转化催化剂。该配合物具有N-杂环卡宾
配体和与第8族过渡
金属中心相关的螯合卡宾
配体。可以改变配合物的分子结构,从而提供实质性的潜伏期。该配合物在催化非环烯烃的环闭合重排和环烯烃的环开启重排聚合方面特别有用。