Mixed halodicyclopentadienyl-niobium(V) and -tantalum(V)

Authors
Antiñolo García, Antonio; Fajardo, Mariano; Otero Montero, Antonio; Royo Gracia, PascualUniversity of Alcalá Author
Identifiers
Permanent link (URI): http://hdl.handle.net/10017/4800
DOI: 10.1016/0022-328X(84)80049-2
ISSN: 0022-328X
Publisher
Elsevier
Date
1984
Affiliation
Universidad de Alcalá. Departamento de Química Inorgánica
Funders
We greatly appreciate the financial support received from the Comisión Asesora de Investigación Cientifica y Tecnica (Spain).
Bibliographic citation
Journal of Organometallic Chemistry, 1984, v. 265, p. 35-43
Keywords
Halodicyclopentadienyl-niobium(V)
Tantalum(V)
Document type
info:eu-repo/semantics/article
Version
info:eu-repo/semantics/publishedVersion
Publisher's version
http://dx.doi.org/10.1016/0022-328X(84)80049-2
Rights
(c) Elsevier, 1984
Access rights
info:eu-repo/semantics/openAccess
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Abstract
Oxidation of (η5-C5H5)2MCl (M = Nb, Ta) with 1 mol of Cl2, Br2 or I2 gives (η5-C5H5)2MClX2 whereas the reaction with an excess of the halogen gives the cationic complexes [η5-C5H5)2MClX]+ X3− (X = Br, I). Similar oxidation of (η5-C5H5)2MCl2 with 0.5 mol of halogen gives (η5-C5H5)2MCl2X complexes, but if the halogen is used in excess cationic [η5-C5H5)2MCl2]+ X3− (X = Br, I; M = Ta and X = I, M = Nb) are obtained. All these complexes can also be obtained simultaneously by oxidizing (η5-C5H5)4M2Cl3, and the separation is fairly easy in most cases. Conductivity and IR and NMR data are discussed.
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