The arylamino-substituted ferrocene derivative Fe[C5H4(NH-2,4,6-iPr3-C6H2)]2} (1b) reacts with Zr(CH2Ph)4 and Zr(NMe2)4 to afford the respective zirconium chelates [(PhCH2)2ZrFe[C5H4(N-2,4,6-iPr3-C6H2)]2}] (2) and [(Me2N)2ZrFe[C5H4(N-iPr3-2,4,6-C6H2)]2}] (3), which exhibit unexpectedly low catalytic activity in the polymerization of ethylene after activation with MAO and [Ph3C][B(C6F5)4], respectively
芳基
氨基取代的
二茂铁衍
生物Fe [C 5 H 4(NH-2,4,6- i Pr 3 -C 6 H 2)] 2 }(1b)与Zr(CH 2 Ph)4和Zr(NMe 2)4得到相应的
锆螯合物[(PhCH 2)2 Zr Fe [C 5 H 4(N-2,4,6- i Pr 3 -C 6 H 2)] 2 }](2)和[ (我2 N)2Zr Fe [C 5 H 4(N- i Pr 3 -2,4,6-C 6 H 2)] 2 }](3),在用MAO和MAO活化后,在
乙烯的聚合反应中表现出出乎意料的低催化活性。分别是[Ph 3 C] [B(C 6 F 5)4 ]。为了阐明庞大的芳基取代基的立体电子效应,已经确定了2和3及其母体
二茂铁衍
生物1b的结构以及苯
氨基类似物Fe [C 5 H 4(NHPh)] 2 }(1a),为此已经开发了改进的合成方法。