256957-41-2Relevant academic research and scientific papers
Stoichiometric olefin insertion into the Ti-C bond of four-coordinate cationic bis(phenolate) titanium aryl and benzyl complexes
Gielens, Esther E.C.G.,Dijkstra, Tessa W.,Berno, Pietro,Meetsma, Auke,Hessen, Bart,Teuben, Jan H.
, p. 88 - 95 (1999)
A series of five-coordinate bis(phenolate) titanium hydrocarbyl complexes (MBP)Ti(η2-R)R′ was prepared, with MBP=2,2′-methylenebis(4-methyl-6-tert-butylphenolate), R=C6H4(o-CH2NMe2); R′=Cl, OSO2CF3, Me, CH2CMe3 or R=CH2C6H4(o-NMe2); R′=Cl, Me. A structure determination of (MBP)Ti[η2-C6H4(o-CH2NMe 2)]OSO2CF3 showed the metal to have a distorted trigonal bipyramidal coordination geometry. Cationic four-coordinate derivatives [(MBP)Ti(η2-R)]+ were generated by reacting the R′=Me derivatives with the Lewis acid B(C6F5)3. These cations were found to undergo stoichiometric insertions of ethene and propene into the Ti-C bond, as seen by 1D and 2D-NMR spectroscopy and quenching reactions with CD3OD.
