Cyclic bent allene metal complexes

摘要

The present invention provides stable, cyclic bent allene metal complexes and methods of conducting chemical processes, preferably olefin hydrogenation, comprising contacting an olefin substrate, preferably an unsaturated polymer, with a cyclic bent allene metal complex as described herein, under hydrogenation conditions.
wherein
M is a transition metal selected from Groups 6-11 of the periodic table,
L 1 is a cyclic bent allene ligand according to the general formula (II)