Dicyclopentadienyl zirconium and hafnium complexes with the bridged (dimethylsilanodiyl)dicyclopentadienyl [(SiMe2)(η5-C5H4)2]2 ligand. X-ray molecular structure of [Zr{(SiMe2)(η5-C5H4)2}(CH2Ph)]2(μ-O)
Autores
Cuenca Agreda, José Tomás; Gómez Sal, Pilar; Martín Marcos, Carlos; Royo Cantabrana, Beatriz; Royo Gracia, PascualIdentificadores
Enlace permanente (URI): http://hdl.handle.net/10017/4231DOI: 10.1016/S0022-328X(99)00362-9
ISSN: 0022-328X
Editor
Elsevier
Fecha de publicación
1999Patrocinadores
We acknowledge the Dirección General de Investigación Científica y Técnica (Spain) for financial support of this research (Project PB97-0776).
Cita bibliográfica
Journal of Organometallic Chemistry, 1999, v. 588, p. 134-140
Palabras clave
Zirconium
Hafnium
Silanediyl-cyclopentadienyl
Chloro
Alkyl
Oxoalkyl
Proyectos
PB97-0776 (Ministerio de Educación y Cultura)
Tipo de documento
info:eu-repo/semantics/article
Versión
info:eu-repo/semantics/publishedVersion
Versión del editor
http://dx.doi.org/10.1016/S0022-328X(99)00362-9Derechos
(c) Elsevier, 1999
Derechos de acceso
info:eu-repo/semantics/openAccess
Resumen
Reaction of the bridged (dimethylsilanediyl)dicyclopentadienyl dilithium salt [(SiMe2)(C5H4)2Li2] with MCl4, in toluene, gave the zirconium and hafnium complexes [M{(SiMe2)(η5-C5H4)2}Cl2] [M=Zr (1), Hf (2)]. Addition of two equivalents of M′R (M′=MgCl, R=CH3; M′=Li, R=CH2CMe2Ph; M′=MgBz, R=CH2Ph) to toluene or diethyl ether solutions of [M{(SiMe2)(η5-C5H4)2}Cl2] afforded the dialkyl derivatives [M{(SiMe2)(η5-C5H4)2}R2] [R=CH3, M=Zr (3), Hf (4); R=CH2CMe2Ph, M=Zr (5), Hf (6); R=CH2Ph, M=Zr (7)]. Compound 1 reacted with LiMe and Mg(CH2Ph)2(THF)2 in the presence of a stoichiometric amount of water to give the μ-oxo derivatives [Zr{(SiMe2)(η5-C5H4)2}R]2(μ-O) [R=CH3 (8), CH2Ph (9)]. The X-ray molecular structure of [Zr{(SiMe2)(η5-C5H4)2}(CH2Ph)]2(μ-O) (9) has been determined by diffraction methods. Its most remarkable feature is the planarity of the BzZrOZrBz and the linearity of the ZrOZr systems.
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