Answers are grounded in this paper and cite their sources.
Self-help groups: The aluminatopyrrolyl complexes [{η5-2,3,4,5-Me4C4N(AlClMe2)}2Cr] and [{η5-2,3,4,5-Me4C4N(AlClMe2)CrMe(μ-NPh)2AlMe2}{Me3Al(thf)}] self-activate to give single-site ethylene polymerization catalysts. The closely related dinuclear chromium(II) complex [{η5-2,3,4,5-Me4C4N(AlClMe2)Cr}2(μ-Me)2] (see picture) is a highly active self-activating ethylene trimerization catalyst.
No takes yet. Share an insight, caveat, or question.
Vidyaratne et al. (2009) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: