AI Article Synopsis
- A set of new chromium(III) complexes using a specific tridentate ligand were developed and characterized for their ability to catalyze ethylene polymerization/oligomerization.
- X-ray analyses confirmed that these complexes featured a specific geometric arrangement around the chromium center, crucial for their catalytic activity.
- The effectiveness of these catalysts varied significantly based on the chemical groups attached to the ligands and the conditions under which the reactions were conducted.
Article Abstract
A set of new chromium(III) [Cr(III)] complexes based on the tridentate ligand HC(Pz)2Py (Pz = pyrazole; Py = pyridine) and its derivatives were prepared, characterized, and evaluated for ethylene polymerization/oligomerization. X-ray single-crystal analyses of the Cr(III) complexes showed tridentate coordination on the fac-octahedral Cr sphere. Upon activation with methylaluminoxane (MAO), the precatalysts and the ligands L1-L3 mixed in situ with Cr(acac)3 were highly active and generally produced polyethylene as a major product. Their catalytic performances were markedly affected by the substituents on the methine carbon atom of the ligands and reaction conditions.
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| http://dx.doi.org/10.1039/c5dt00855g | DOI Listing |
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