Bis (arylimino) pyridine derivatives of Group 4 metals: preparation, characterization and activity in ethylene polymerization

F Calderazzo, U Englert, G Pampaloni, R Santi…

Index: Calderazzo, Fausto; Englert, Ulli; Pampaloni, Guido; Santi, Roberto; Sommazzi, Anna; Zinna, Marianna Dalton Transactions, 2005 , # 5 p. 914 - 922

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Citation Number: 15

Abstract

Titanium tetrachloride reacts with 2, 6-bis [(1-phenylimino) ethyl] pyridine, 1, and 2, 6-bis [1- (2, 6-diisopropylphenylimino) ethyl] pyridine, 2, giving the adducts of general formulae [Ti (1) Cl3] Cl, 3, and [Ti (2) Cl3] Cl, 6, the latter through the intermediacy of the covalently bonded [Ti (2) Cl4], 4. Heating 6 leads to reduction to the titanium (III) derivative [Ti (2) Cl3], 12, the latter characterized by X-ray diffraction methods. The reaction of [Ti (1) Cl3] Cl with a ...