Abstract
Three bulky cyclopentadienyltitanium aryloxide complexes, [Ti(η5-C5Me4Ar)(O-2,6-tBu2C6H3)Cl2], (Ar=C6H5 (4), 4-iPrC6H4 (5), 4-Me3SiC6H4 (6)) have been synthesized from reaction of the corresponding cyclopentadienyltitanium trichloride derivatives with 1 equiv of LiO-2,6-tBu2C6H3. These half-sandwich complexes 4–6 have been characterized by 1H and 13C NMR spectroscopy. The molecular structure of complexes 4 and 6 has been determined by single-crystal X-ray diffraction studies. When activated with iBu3Al and Ph3C+B(C6F5)4−, complexes 4–6 exhibits reasonable catalytic activity for ethylene polymerization, producing moderate molecular weight polyethylenes.
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