Bromodicyclopentadienylniobium complexes

Authors
Acedo Peque, Lucía; Otero Montero, Antonio; Royo Gracia, PascualUniversity of Alcalá Author
Identifiers
Permanent link (URI): http://hdl.handle.net/10017/4802
DOI: 10.1016/S0022-328X(00)99255-6
ISSN: 0022-328X
Publisher
Elsevier
Date
1983
Affiliation
Universidad de Alcalá. Departamento de Química Inorgánica
Funders
Comisión Asesora de Investigación Científica y Técnica
Bibliographic citation
Journal of Organometallic Chemistry, 1983, v. 258, n. 2, p. 181-187
Keywords
Bromodicyclopentadienylniobium
Document type
info:eu-repo/semantics/article
Version
info:eu-repo/semantics/publishedVersion
Publisher's version
http://dx.doi.org/10.1016/S0022-328X(00)99255-6
Rights
© Elsevier, 1983
Access rights
info:eu-repo/semantics/openAccess
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Abstract
The reaction of NbX5 (X=Cl, Br) with an excess of NaCp (Cp=C5H5) followed by the addition of HBr gives (η5-C5H5)2NbBr2 (I) in low yield. The reduction of I with Na/Hg or NaNaph in a molar ratio 1/1 gives (η5-C5H5)2NbBr (II), whereas the same reaction in the presence of π-acid ligands gives (η5-C5H5)2NbBrL (III, L=CO; IV, L=PMe2Ph; V, L=P(OMe)3; VI, L=PhC≡CPh; VIII, L=PhC≡CH). Finally, the reduction of I with Na/Hg in a molar ratio 2/1 gives the dimer (η5-C5H5)4Nb2Br3 (VIII), which contains both niobium(III) and niobium(IV). The chemical and structural characteristics of all these compounds are described.
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