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New intermediates for the synthesis of olefin polymerization catalysts: the complexes [M2(μ-Cl)2Cl4(thf)4] (M = Ti or V, thf = tetrahydrofuran) : crystal structures and properties.
Autorzy
Rok wydania
1993
Czasopismo
Journal of the Chemical Society, Dalton Transactions
Strony
2353-2357
DOI
10.1039/DT9930002353
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
The dimeric titanium(III) and vanadium(III) complexes [M2(µ-Cl)2Cl4(thf)4](M = Ti 1 or V 2, thf = tetrahydrofuran) have been prepared by recrystallization of [MCl3(thf)3] from dichloromethane. In the dimers, composed of slightly distorted edge-sharing octahedra, the metal atoms separated by Ti ⋯ Ti and V ⋯ V distances of 3.711 (3) and 3.619(1)Å, respectively, are surrounded by two terminal Cl atoms, two oxygen atoms of thf molecules and are linked by two bridging Cl atoms. The geometry around the titanium atoms differs from that around vanadium because the thf molecules and the terminal chlorine atoms are differently located with respect to the bridging chlorine atoms of the M2(µ-Cl)2 unit. High catalytic activity was found for ethylene polymerization by 1.
Adres publiczny
https://doi.org/10.1039/DT9930002353
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