Allyl complexes of dicyclopentadienyl-niobium(III) and -tantalum(III) |
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Authors: | A Van Baalen CJ Groenenboom HJ De Liefde Meijer |
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Institution: | Laboratorium voor Anorganische Chemie, Rijksuniversiteit, Zernikelaan, Groningen The Netherlands |
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Abstract: | The synthesis and the properties of the complexes Cp2TaCl2, Cp2M(allyl), Cp2M(1-methylallyl) and Cp2M(2-methylallyl) with M Nb, Ta are described. The complex Cp2TaCl2 has one unpaired electron per tantalum atom, while the allyl complexes are diamagnetic. The IR and PMR spectra indicate that the allyl group is π-bonded to the metal. The mass spectra of the complexes are discussed; the thermal stability of the Cp2Nb- and Cp2Ta-(allyl) complexes was investigated by differential thermal analysis. The properties of the niobium and tantalum complexes are compared with those of the corresponding titanium complexes. |
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Keywords: | Author to whom correspondence should be addressed |
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