文献类型：期刊文献

英文题名：Ethylene tri-/tetramerization catalysts supported by diphosphinoindole ligands

作者：Ma, Xufeng[1,2];Liu, Yao[1,2];Wang, Zhichao[1,2];Zhao, Xing[1,2];Mi, Puke[3];Zhang, Jun[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, Inst Fine Chem, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China

年份：2022

卷号：958

外文期刊名：JOURNAL OF ORGANOMETALLIC CHEMISTRY

收录：;EI(收录号：20214811246898);WOS:【SCI-EXPANDED(收录号:WOS:000729379500001)】；

基金：Financial support from National Key R&D Program of China (2017YFB0306701) and the National Natural Science Foundation of China for financial support (216710 66 and 21171056) is greatly acknowledged.

语种：英文

外文关键词：Ethylene oligomerization; Diphosphinoindole ligands; Chromium complex; Ethylene trimerization; Ethylene tetramerization; Diphosphine

摘要：A new class of diphosphinoindole ligands have been developed. Upon activation with MMAO-3A, Cr catalysts supported by these bisphosphine ligands are active for ethylene tri-/tetramerization. The best result was achieved by using the bisphosphine ligand containing a phenyl group at C3 position of indole, giving a high activity of up to 364 kg/(g Cr/h) with a total selectivity of up to 72% toward 1-hexene (23.5%) and 1-octene (48.4%). A representative chromium tetracarbonyl complex was synthesized and structurally characterized by single-crystal X-ray diffraction. (c) 2021 Published by Elsevier B.V.