摘要
[t-BuNSiMe_2(2,7-t-Bu_2Flu)]ZrMe_2 and[t-BuNSiMe_2(3,6-t-Bu_2Flu)]ZrMe_2 were synthesized,and the solid structure of complex[t-BuNSiMe_2(2,7-t-Bu_2Flu)]ZrMe_2 was elucidated by single crystal X-ray analysis.These complexes were applied for propylene polymerization using dried modified methylaluminoxane as a cocatalyst at 0℃and 20℃in toluene.Both systems did not show activity at 0℃,but they conducted the polymerization at 20℃.The introduction of t-butyl substituents to the fluorenyl ligand improved the activ...
[t-BuNSiMe_2(2,7-t-Bu_2Flu)]ZrMe_2 and[t-BuNSiMe_2(3,6-t-Bu_2Flu)]ZrMe_2 were synthesized,and the solid structure of complex[t-BuNSiMe_2(2,7-t-Bu_2Flu)]ZrMe_2 was elucidated by single crystal X-ray analysis.These complexes were applied for propylene polymerization using dried modified methylaluminoxane as a cocatalyst at 0℃and 20℃in toluene.Both systems did not show activity at 0℃,but they conducted the polymerization at 20℃.The introduction of t-butyl substituents to the fluorenyl ligand improved the activ...
