Ethylene; oligomerization; Diimine; iron; complexes; Ethylaluminoxane; Sodium; (diphenylphosphino); acetate; 分类号:O6; 文献标识码:A; 文章编号:1005-9040(2001)-02-228-05; Introduction; A; new; area; of; organometallic; catalysis; in; macromolecular; chemistry; has; been; unveiled; by; the; discovery; of; the; catalytic; activity; of; late; transition; metal; complexes; containing; bi-; or; tri; dentate; ligands; for; the; polymerization; and; the; oligomerization; of; ethylene; and; α-olefins1-5.……;