166033-71-2

Upstream product

• 7550-45-0 titanium tetrachloride 
• 166033-74-5 C₅(C₆H₄CH₃)(CH₃)4(Si(CH₃)3) 

Downstream Products

• 413601-45-3 (C₅(C₆H₄CH₃)(CH₃)4)Ti(N(CH₂CH₂O)3) 
• 1035359-30-8 (3,3',5,5'-tetraisopropyl-4,4'-biphenolate)-bi-[1-(4'-methylphenyl)-2,3,4,5-tetramethylcyclopentadienyl-TiCl₂] 
• 1035359-40-0 1-(4'-methylphenyl)-2,3,4,5-tetramethylcyclopentadienyl-TiCl₂(2,6-diisopropylphenolato) 

Relevant academic research and scientific papers

Propylene polymerization to high molecular weight atactic polypropylene and copolymerization with 1-hexene using monocyclopentadienyl titanium catalysts

A number of cyclopentadienyltitanium aryloxide complexes, 1-Ar-2,3,4,5-Me4-Cp(2,6-iPr2C6H 3O)TiCl2 (Ar = 4-Me3SiPhenyl (5), 4- iPrPhenyl (6), 4-MePhenyl (7), 3,5-(CF3)2Phenyl (8)) and (1-Ar-2,3,4,5-Me4CpTiCl2)2(OAr′ O) (Ar′ = 4,4′-(3,3′,5,5′-iPr 4C6H2-C6H2), Ar = 4-SiMe3Phenyl (9), 4-MePhenyl (10)) were synthesized from the reaction of a corresponding cyclopentadienyl titanium trichloride derivative with the lithium salt of a relevant phenol. The molecular structures of complexes 6, 7 and 8 were determined by X-ray crystallography. Upon activation with iBu3Al and Ph3CB(C6F 5)4, all mononuclear complexes 5-8 exhibit good catalytic activities for propylene polymerization, whereas the binuclear complexes 9 and 10 show lower catalytic activities under the same polymerization conditions. 13C NMR, DSC and GPC analysis indicates the produced polymers are atactic polypropylene with relatively high molecular weight. It was found that the substituents on both the cyclopentadienyl and aryloxy ligands of these complexes show obvious influence on the molecular weight of the resultant polymers with complex 5 producing the highest molecular weight atactic polypropylene. Complexes 5, 6 and 7 were also tested as catalysts for copolymerization of propylene with 1-hexene and copolymers with 1.2-10.1% comonomer incorporation were obtained in reasonable catalytic activity. The Royal Society of Chemistry 2010.

New titanatranes: Characterization and styrene polymerization behavior

New titanatranes containing cyclopentadienyl ligands were prepared by the reactions of various kinds of trialkanolamines with (C5Me4R)TiCl3 (Cp′ = C5Me4R) in the presence of triethylamine. The X-ray analyses reveal that they exist in the monomeric form in the solid state and the Ti atom adopts essentially an η5 bonding posture with the Cp′ ring and a tetradentate bonding mode with the trialkanolatoamine ligand via a transannular interaction from the bridgehead N atom to Ti. All compounds show very high catalytic activity for the syndiospecific polymerization of styrene in the presence of modified methylaluminoxane (MMAO) cocatalyst.