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Molecules 2017, 22(5), 856; doi:10.3390/molecules22050856

Synthesis and Characterization of Constrained Geometry Oxygen and Sulphur Functionalized Cyclopentadienylchromium Complexes and Their Use in Catalysis for Olefin Polymerization

1,2
,
2
,
1,2,* and 2,*
1
School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
2
The Laboratory of Organometallic Chemistry, East China University of Science and Technology, Shanghai 200237, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Kotohiro Nomura
Received: 11 April 2017 / Revised: 8 May 2017 / Accepted: 15 May 2017 / Published: 22 May 2017
(This article belongs to the Special Issue Organometallic Catalysis for Olefin Polymerization/Oligomerization)
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Abstract

A series of constrained geometry O-functionalized cyclopentadienylchromium complexes (16) 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. View Full-Text
Keywords: CGC-organochromium complexes; oxygen functionalized cyclopentadienyl; olefin polymerization CGC-organochromium complexes; oxygen functionalized cyclopentadienyl; olefin polymerization
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Zhao, R.; Ma, J.; Zhang, H.; Huang, J. Synthesis and Characterization of Constrained Geometry Oxygen and Sulphur Functionalized Cyclopentadienylchromium Complexes and Their Use in Catalysis for Olefin Polymerization. Molecules 2017, 22, 856.

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