Synthesis and ethylene trimerisation capability of new chromium(ii) and chromium(iii) heteroscorpionate complexes
作者:Alexander F. R. Kilpatrick、Shaneesh Vadake Kulangara、Michael G. Cushion、Robbert Duchateau、Philip Mountford
DOI:10.1039/b926333k
日期:——
showed a preference for 1-hexene and 1-octene formation. While replacing a secondaryamine (10-13) for a tertiary amine (15-16) resulted in loss of catalytic activity, replacing a phenol (19) for an anisole (23) group afforded a more selective and more active catalyst. Changing from MAO to DIBAL-O as cocatalyst induced a switch in selectivity to ethylene polymerisation.
的反应 (Me 2 pz)2 CHSiMe 2 N(H)R(R = i Pr或Ph)或(Me 2 pz)2 CHSiMe 2 NMe 2 和 CrCl 3(四氢呋喃)3 或者 氯化铬2(THF)2得到Cr (Me 2 pz)2 CHSiMe 2 NR 1 R 2 } Cl 3(R 1 =H,R 2 =我镨(10)或Ph(11);R 1 = R 2 = Me(15))或Cr (Me 2 pz)2 CHSiMe 2 NR 1 R 2 } Cl 2(THF)(R 1 =H,R 2 =我镨(12)或Ph(13);R 1= R 2= Me(16))。对化合物10和11进行了晶体学表征,并使用SQUID磁力分析法评估了所有新化合物的磁行为。的反应CrCl 3(四氢呋喃)3 和 Li C(Me 2 pz)3 }(THF) 给出了两性离子复合物 Cr C(Me 2 pz)3 } Cl 2(THF)