UV–visible spectroscopy for zirconocene activation by MAO in olefin polymerization: activity versus wavenumber |
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| Authors: | Carlos Alonso‐Moreno Pedro Carrion Fernando Carrillo‐Hermosilla Antonio Antiñolo Antonio Otero |
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| Institution: | Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Ciencias Químicas, Universidad de Castilla‐La Mancha, Campus Universitario de Ciudad Real, 13071‐Ciudad Real, Spain |
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| Abstract: | Activation of ansa‐zirconocenes of the type Rac Zr{1‐Me2Si(3‐R‐(η5‐C9H5))(3‐R′‐(η5‐C9H5))}Cl2] R = Et, R′ = H ( 1 ); R = Pr, R′ = H ( 2 ); and R = Et, R′ = Pr ( 3 ), R, R′ = Me ( 4 ) and R, R′ = Bu ( 5 )] by MAO has been studied by UV–visible spectroscopy. Compounds 1–3 have been tested in the polymerization of ethylene at different Al:Zr ratios. UV–vis spectroscopy was used to determine a correlation between the electronic structures of ( 1–5 ) and their polymerization activity. Copyright © 2009 John Wiley & Sons, Ltd. |
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| Keywords: | metallocene catalysts UV– VIS spectroscopy |
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