Iron and Cobalt Complexes of 2,3,7,8-Tetrahydroacridine-4,5(1<i>H</i>,6<i>H</i>)-diimine Sterically Modulated by Substituted Aryl Rings for the Selective Oligomerization to Polymerization of Ethylene
作者:Vinu Krishnan Appukuttan、Yinshan Liu、Bong Chul Son、Chang-Sik Ha、Hongsuk Suh、Il Kim
DOI:10.1021/om2000629
日期:2011.4.25
A new series of Fe(II) and Co(II) complexes of sterically modulated 2,3,7,8-tetrahydroacridine-4,5(1H,6H)-diimine by substituted aryl rings are synthesized. The complex synthesis is achieved through a one-pot methodology by reacting one equivalent of 2,3,7,8-tetrahydroacridine-4,5(1H,6H)-dione with two equivalents of required aniline derivatives together with Fe or Co salt in boiling acetic acid. The
合成了一系列新的Fe(II)和Co(II)配合物,这些配合物通过取代的芳基环进行空间调节的2,3,7,8-四氢ac啶-4,5(1 H,6 H)-二亚胺。通过一锅法使1当量的2,3,7,8-四氢ac啶-4,5(1 H,6 H)-二酮与2当量的所需苯胺衍生物以及Fe或Co反应来完成复杂的合成在沸腾的乙酸中的盐。Fe和Co络合物带有2,6-二异丙基取代的配体的单晶X-射线分析,(Ñ,Ñ ' é,Ñ,Ñ ' ë ) - ñ,Ñ'-(2,3,7,8-四氢ac啶-4,5 (1 H,6 H)-二亚烷基)双(2,6-二异丙基苯胺)显示出金属中心的扭曲三角双锥体几何形状,与由于通过球形化获得的羰基碳原子的结构刚性而导致的配位球开放,从而形成了方形锥体的几何形状。当用甲基铝氧烷作为助催化剂处理时,所有配合物均表现出对乙烯活化的高活性。芳基环的邻位取代基和金属类型对乙烯活化特别是对产物分布具有显着影响。具有2,