Synthesis and characterization of sterically expanded ansa-η1-fluorenyl-amido complexes
作者:Levi J. Irwin、Joseph H. Reibenspies、Stephen A. Miller
DOI:10.1016/j.poly.2005.03.011
日期:2005.8
having the general structures Me 2 Si(η 1 -C 29 H 36 )(η 1 -N- t Bu)MX 2 · L or Me 2 Si(η 5 -C 29 H 36 )(η 1 -N- t Bu)MX 2 (M = Zr or Hf): 2 (X = Cl, L = Et 2 O); 3 (X = Br, L = Et 2 O); 4 (X = Me, L = Et 2 O); 5 (X = Me, L = THF); 6 (X = CH 2 Ph); and 7 (X = CH 2 SiMe 3 ). The solid-state structures have been determined for seven of these complexes by X-ray crystallography, revealing η 5 -C 29 H 36 coordination
摘要八甲基八氢二苯并芴基(Oct)配体已被掺入十二种具有一般结构Me 2 Si(η1 -C 29 H 36)(η1 -N-t Bu)MX 2·L或Me 2的ansa-Oct-酰胺基络合物中Si(η5 -C 29 H 36)(η1 -N-t Bu)MX 2(M = Zr或Hf):2(X = Cl,L = Et 2 O); 3(X = Br,L = Et 2 O);4(X = Me,L = Et 2 O);5(X = Me,L = THF);6(X = CH 2 Ph);和7(X = CH 2 SiMe 3)。通过X射线晶体学确定了其中7种配合物的固态结构,揭示了无醚伪四面体物种6-Zr,6-Hf和7-Zr的η5 -C 29 H 36配位,但η1 -C 29 H 36对于以醚键结合的三角双锥体物种2-Zr,3-Zr,3-Hf和5-Zr的配位。分配了异常的η1 -C 29 H 36配位,因为每个结构中只有一个金属-碳键在2