采用Schlenk技术,在干燥纯氩气保护下,用无水三氯化稀土LnCl3与2-苯基茚以1∶2的摩尔比在THF中反应,得到8种新配合物:(2-ph-Ind)2LnCl (A)[Ln=La(1), Pr(2), Nd(3), Sm(4), Gd(5), Dy(6), Yb(7), Y(8)].再用(A)和LiN(TMS)2在THF中反应,得到两种新的二(2-苯基茚)稀土有机配合物:(2-ph-Ind)2LnN(TMS)2 (B)[Ln=Y(1), Sm(2)].所有配合物都经元素分析、红外和质谱鉴定.配合物(B)在甲基丙烯酸甲酯(MMA)的聚合反应中显示出一定的活性.
参考文献
| [1] | Witte P;Lal T K;Waymouth R M.Synthesis of unbridged bis(2-R-indenyl)zirconocenes containing functional groups and investigations in propylene polymerization[J].Organometallics,1999:18,4147-4155. |
| [2] | Taylor M D;Cartar C P .Preparation of anhydrous lanthanide halides,especialy iodides[J].Journal of Radioanalytical and Nuclear Chemistry,1962,24:387-392. |
| [3] | Greifenstein L G;Lambert J B;Nienhnios R J et al.Response of acidity and magnetic resonane properities to aryl substitution in carbon acids and derived carbonions:2-and 3-arylindenes[J].Journal of Organic Chemistry,1981,46:5125-5131. |
| [4] | GilmanH;Fend W et al.Some factors affecting halogen-metal interconversions[J].Journal of the American Chemical Society,1940,62:1843-1846. |
| [5] | Lee M H;Hwang J W;Kim Y et al.The first fluorenyl ansa-yttrocene complexes:synthsis,structures,and polymerization of methyl methacrylate[J].Organometallics,1999,18:5124-5129. |
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