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Silyl and siloxanediyl cyclopentadienyl titanium and zirconium complexes: synthesis and reactivity. X-ray molecular structure of [Zr{η5-C5H4SiMe2(μ-OH)}(μ-Cl)Cl2]2

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Authors
Ciruelos Ortega, Santiago; Cuenca Agreda, Tomás; Gómez Ramírez, RafaelUniversity of Alcalá Author; Gómez Sal, Pilar; Manzanero Castillo, AntonioUniversity of Alcalá Author; [et al.]
Identifiers
Permanent link (URI): http://hdl.handle.net/10017/4327
DOI: 10.1016/S0277-5387(97)00491-9
ISSN: 0277-5387
Publisher
Pergamon
Date
1998
Affiliation
Universidad de Alcalá. Departamento de Química Inorgánica
Funders
Universidad de Alcalá
Consejería de Educación de la Comunidad de Madrid
Bibliographic citation
Polyhedron, 1998, v.17, n.7, p.1055-1064
Keywords
Titanium
Zirconium
Siloxanediyl cyclopentadienyl
Hydroxide
Project
PB-92-0178-C (Ministerio de Educación y Cultura)
Document type
info:eu-repo/semantics/article
Version
info:eu-repo/semantics/publishedVersion
Publisher's version
http://dx.doi.org/10.1016/S0277-5387(97)00491-9
Rights
© Elsevier, 1998
Access rights
info:eu-repo/semantics/openAccess
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Abstract
Chloro(dimethyl)silyl-η5-cyclopentadienyl group 4 metal complexes of the type [M(η5-C5H4Cl)Cl3] (Full-size image (<1 K)) react with thallium salts Tl(C5H4R) (R = H, SiMe3) to give mixed dicyclopentadienyl derivatives [M(η5-C5H4R)(η5-C5H4SiMe2Cl)Cl2], (M = Ti, R = H 3, R = SiMe34; M = Zr, R = H 5, R = SiMe36) in high yield. Hydrolysis of complexes 3 and 4 affords the dinuclear complexes [Ti(η5-C5H4R)Cl2]2{μ-[(η5-C5H4SiMe2)2O]}] [R = H 7, R = SiMe38) containing a siloxanyl bridge, by elimination of two equivalents of HCl. Reactions of complexes 1 with hydroxo containing reagents such as anhydrous LiOH and SiPh2(OH)2 give the derivatives [Ti(η5-C5H4SiMe2Cl)Cl2]2(μ-O)], 9 and Ti[μ-(η5-C5H4SiMe2OSiPh2-η1-O)]Cl2, 10 identified by analytical, spectrometric and spectroscopic data. Treatment of analogous complex 2 with water produces the dimeric monocyclopentadienyl zirconium trichloride adduct [Zr(η5-C5H4SiMe2OH)Cl3]2, 11. Compound 11 has been characterized by X-ray crystallography.
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