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
Authors
Ciruelos Ortega, Santiago; Cuenca Agreda, Tomás; Gómez Ramírez, RafaelIdentifiers
Permanent link (URI): http://hdl.handle.net/10017/4327DOI: 10.1016/S0277-5387(97)00491-9
ISSN: 0277-5387
Publisher
Pergamon
Date
1998Funders
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)00491-9Rights
© Elsevier, 1998
Access rights
info:eu-repo/semantics/openAccess
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.
Collections
- QUIMINOR - Artículos [197]