| 摘要 |
Iron, cobalt, chromium or vanadium complexes of 2,6- pyridjnedicarboxaldehydes diimines and 2,6-diacylpyridines diimines which are suitable for catalyzing the oligomerization of ethylene to a-olefins exhibit more prolonged catalytic activity and/or yields products with linear Schuiz-FIory distributions, if aryl groups attached to the imino carbon atom(s) are substituted with at least one m-aryl group. |
