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Hydro- and chloro-substituted silyl- and silyl-η1 -amido-η5- tetramethylcyclopentadienyl titanium complexes

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Authors
Vázquez García, Ana BelénUniversity of Alcalá Author; Royo Gracia, PascualUniversity of Alcalá Author; Herdtweck, Eberhardt
Identifiers
Permanent link (URI): http://hdl.handle.net/10017/4187
DOI: 10.1016/S0022-328X(03)00559-X
ISSN: 0022-328X
Publisher
Elsevier
Date
2003
Affiliation
Universidad de Alcalá. Departamento de Química Inorgánica
Funders
Comunidad Autónoma de Madrid
Bibliographic citation
Journal of Organometallic Chemistry, 2003, v.683, n.1, p.155-164
Keywords
Titanium
Tetramethyl cyclopentadienyl
Linked amido-cyclopentadienyl
Chlorosilyl-cyclopentadienyl
Methyl complexes
Project
MAT2001-1309 (Ministerio de Ciencia y Tecnología)
Document type
info:eu-repo/semantics/article
Version
info:eu-repo/semantics/publishedVersion
Publisher's version
http://dx.doi.org/10.1016/S0022-328X(03)00559-X
Rights
© Elsevier, 2003
Access rights
info:eu-repo/semantics/openAccess
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Abstract
Chlorosilyl-cyclopentadienyl titanium precursors [Ti(η5-C5Me4SiMeXCl)Cl3] (X=H 2, Cl 3) were prepared by reaction of TiCl4 with the trimethylsilyl derivatives of the corresponding cyclopentadienes. Methylation of these compounds with MgClMe under appropriate conditions afforded the methyl complexes [Ti(η5-C5Me4SiMe2R)XMe2] (R=H, X=Cl 5, Me 6; R=X=Me 7). Reactions of 2 and 3 with two equivalents of LiNHtBu afforded the ansa-silyl-η-amido compounds [Ti{η5-C5Me4SiMeX(η1-NtBu)}Cl2] (X=H 8, Cl 9). Methylation of 8 gave [Ti{η5-C5Me4SiMeH(η1-NtBu)}Me2] 10. Complex 9 was also obtained by reaction of 8 with BCl3, whereas the same reaction using alternative chlorinating agents (TiCl4, HCl) resulted in deamidation to give 2, which was also converted into 3 by reaction with BCl3. All of the new compounds were characterized by NMR spectroscopy and the molecular structures of 2 and 4 were determined by X-ray diffraction methods.
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