Alkylzirconium-(III) and alkylzirconium-(IV) complexes
The complex [(η5-C5H5)2ZrCl]2 is oxidized by acetylenes PhCCR (R = H, Ph) to give dimeric alkenediylzirconium(IV) derivatives and can be methylated with LiMe and AlMe3. The methyl complex obtained in the reaction with LiMe is a diamagnetic solid characterized as [(η5-C5H5)ZrMe]2 by 1H NMR spectrosc...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 1985 |
| País: | España |
| Institución: | Universidad de Alcalá (UAH) |
| Repositorio: | e_Buah Biblioteca Digital Universidad de Alcalá |
| Idioma: | inglés |
| OAI Identifier: | oai:ebuah.uah.es:10017/4791 |
| Acceso en línea: | http://hdl.handle.net/10017/4791 https://dx.doi.org/10.1016/0022-328X(85)80268-0 |
| Access Level: | acceso abierto |
| Palabra clave: | Alkylzirconium-(III) Alkylzirconium-(IV) Ciencia Química inorgánica Science Chemistry, inorganic |
| Sumario: | The complex [(η5-C5H5)2ZrCl]2 is oxidized by acetylenes PhCCR (R = H, Ph) to give dimeric alkenediylzirconium(IV) derivatives and can be methylated with LiMe and AlMe3. The methyl complex obtained in the reaction with LiMe is a diamagnetic solid characterized as [(η5-C5H5)ZrMe]2 by 1H NMR spectroscopy. This compound is reversibly acylated by CO, and the equilibrium can be displaced by simultaneous oxidation to give the η2-acetylzirconium(IV) complex [(η5- C5H5)2Zr(η5-COMe)]2(μ-O) The analogous insertion of CyNC (Cy = cyclohexyl) goes to completion, and the resulting diamagnetic dimer [(η5C5H5)2Zr(η2- CMeNCy)]2 has been characterized by IR and NMR spectroscopy. The methyl- zirconium(III) complex is a strong reducing agent, being oxidized by AgClO4 with deposition of metallic silver and by I2 to give (η5-C5H5 and (η5-C5H5)2ZrIMe. |
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