Synthesis and Characterization of Constrained Geometry Oxygen and Sulphur Functionalized Cyclopentadienylchromium
Ruiguo Zhao1,2, Jun Ma3, Hao Zhang4,5
1School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China. zhaoruig@imu.edu.cn.
Abstract:
A series of constrained geometry O-functionalized cyclopentadienylchromium complexes (1-6) and a S-functionalized cyclopentadienylchromium complex (7) were first synthesized, characterized, and tested as catalyst precursors for the olefin polymerization. In the presence of MAO, the complexes exhibited high catalytic activity for the polymerization of ethylene. It is shown that ligand variations can have a substantial effect on catalyst activity and stability. The effect of Al/Cr ratio on catalytic activity was also studied.
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