Hydride derivatives of Group 4 metals with the ansa-(SiMe2)2(η5-C5H3)2 ligand
Identificadores
Enlace permanente (URI): http://hdl.handle.net/10017/4557DOI: 10.1016/0022-328X(95)06022-O
ISSN: 0022-328X
Editor
Elsevier
Fecha de publicación
1996Cita bibliográfica
Journal of Organometallic Chemistry, 1996, v.515, n.1-2, p.33-36
Palabras clave
Zr
Hf
Si
Ansu-cyclopentadienyl complexes
Silylcyclopentadienyls
Hydrides
Proyectos
PB92-0178-C (Ministerio de Educación y Ciencia)
Tipo de documento
info:eu-repo/semantics/article
Versión
info:eu-repo/semantics/publishedVersion
Versión del editor
http://dx.doi.org/10.1016/0022-328X(95)06022-ODerechos
© Elsevier, 1996
Derechos de acceso
info:eu-repo/semantics/openAccess
Resumen
The dinuclear hydrides [M(CpSi2Cp)H(η-H)]2[M = Zr (1), Hf (2); (CpSi2Cp) = [(SiMe2)2(η5-C5H3)2]] have been synthesized by reaction of the corresponding dichloro compounds M(CpSi2Cp)Cl2 [M = Zr, Hf] with LiBHEt3 in a molar ratio of 1:2. Related deutero derivatives [M(CPSi2Cp)D(η-D)]2 [M = Zr (3), Hf (4)] were obtained by using LiBDEt3. When the same reaction was carried out with Ti(CpSi2Cp)Cl2, the formation of unidentified titanium(III) species was observed. These compounds have been characterized by the usual analytical and spectroscopic methods. The 1H NMR study of the reaction of complex 1 with traces of water in deuterated tetrahydrofuran shows that the terminal hydrides are more reactive than the bridging hydrides, and only one of the terminal hydrides reacts selectively. Complex 1 shows a rigid behaviour in the NMR time scale between -80°C (500 MHz) and + 80°C (300 MHz).
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