Zirconium(IV) Complexes Having a Rigid 1,8-Naphthalene Diamide versus a Flexible 1,3-Propylene Diamide for Olefin Polymerization
作者:Choong Hoon Lee、Young-Hye La、Joon Won Park
DOI:10.1021/om990360z
日期:2000.2.1
Structure and chemical properties of zirconium(IV) complexes containing a rigid naphthalene diamide ligand ([1,8-C10H6(NSiMe3)2]2-) or flexible propylene diamide ligands ([1,3-C3H6(NR)2]2-, R = SiMe3, Si(i-Pr)3) are described. The reaction of 1,8-C10H6(NHSiMe3)2 with Zr(NMe2)4 in refluxing toluene yields [1,8-C10H6(NSiMe3)2]Zr(NMe2)2 (1), and the product 1 is converted to [1,8-C10H6(NSiMe3)2]ZrCl2
锆的结构和化学特性(IV)含有刚性萘二酰胺配位体([1,8-C复合物10 ħ 6(NSiMe 3)2 ] 2 - )或柔性的丙烯二酰胺配位体([1,3-C 3 H ^ 6(NR)2 ] 2 -,R =森达3,硅(我-Pr)3)进行说明。1,8-C 10 H 6(NHSiMe 3)2与Zr(NMe 2)4在回流的甲苯中反应生成[1,8-C 10 H6(NSiMe 3)2 ] Zr(NMe 2)2(1),并且产物1通过适当的分离产率被转化为[1,8-C 10 H 6(NSiMe 3)2 ] ZrCl 2(2)。用过量的ClSiMe 3处理。X射线晶体学分析确定2形成通过固态的两个氯化物桥缔合的二聚体,并具有高度褶皱的六元环,且N-Zr-N咬合角较小(91.05°)。1,3-C 3 H 6(NHR)2的反应(R = SiMe 3,Si(i- Pr)3)和Zr(NMe 2)4也提供[1,3-C 3