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Inne
Homo-and heterometallic aluminium and titanium complexes of tridentate (OSO) ligand: synthesis, structure, and catalytic activity.
Autorzy
Rok wydania
2005
Czasopismo
Numer woluminu
24
Strony
3987-3994
DOI
10.1021/om050271o
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
The tridentate (OSO-functions) biphenol, 2,2‘-thiobis{4-(1,1,3,3-tetramethylbutyl)phenol} (tbopH2), reacts with AlMe3 to give [Al2(μ-tbop-κ3O,S,O)2Me2] (1). Alcoholysis of 1 results in the formation of [Al2(μ-OEt)2(tbop-κ3O,S,O)2] (2). The reaction of 2 with TiCl4 gives the trimeric complex [Ti3(μ-OEt)2(μ-tbop-κ3O,S,O)2Cl6] (3)·C6H14. Alkylation of 3·C6H14 with LiMe produces two dimeric complexes, [Ti2(μ-tbop-κ3O,S,O)2Me4] (4) and [Ti2(μ-OE)2(tbop-κ3O,S,O)2Me2] (5)·Et2O. Treatment of [Ti2(μ-OEt)2(tbop-κ3O,S,O)2(OEt)2] with AlMe3 and EtOH afforded the heterobimetallic species, [Ti2Al2(μ-OEt)6(μ-tbop-κ3O,S,O)2(OEt)4] (6). The structures of 1−6 were confirmed by NMR spectroscopy; complexes 1, 3·C6H14, 5·Et2O, and 6 were further investigated by X-ray crystallography. Compounds 3−6, when supported on MgCl2 and activated with aluminum alkyls, effectively polymerize ethene.
Słowa kluczowe
Catalysts, Titanium, Alkyls, Ligands, Aluminum
Adres publiczny
https://doi.org/10.1021/om050271o
Strona internetowa wydawcy
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