Half-sandwich isocyanide, phosphine, methyl and phosphanido pentamethylcyclopentadienylniobium(V) complexes

Authors
Alcalde Adeva, María IsabelUniversity of Alcalá Author; Mata de la Mata, Francisco Javier de laUniversity of Alcalá Author; Gómez Rubio, ManuelUniversity of Alcalá Author; Royo Gracia, PascualUniversity of Alcalá Author; Sánchez Rodríguez, FernandoUniversity of Alcalá Author
Identifiers
Permanent link (URI): http://hdl.handle.net/10017/3965
DOI: 10.1016/0022-328X(94)05289-N
ISSN: 0022-328X
Publisher
Elsevier
Date
1995
Affiliation
Universidad de Alcalá. Departamento de Química Inorgánica
Bibliographic citation
Journal of Organometallic Chemistry, 1995, v.492, n.2, p.151-155
Keywords
Niobium
Pentamethylcyciopentadienyl
Isocyanide
Phosphine
Phosphanido
Half-sandwich cpds
Project
PB-92-0178-C (Ministerio de Educación y Ciencia)
Document type
info:eu-repo/semantics/article
Version
info:eu-repo/semantics/publishedVersion
Publisher's version
http://dx.doi.org/10.1016/0022-328X(94)05289-N
Rights
© Elsevier, 1995
Access rights
info:eu-repo/semantics/openAccess
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Abstract
[NbCp★Cl4] Cp★ = ν5-C5Me5) reacts with one molar equivalent of isocyanides and phosphines to give pseudo-octahedral adducts [NbCp★Cl4·L], (Full-size image (<1 K), 4) and the dinuclear complex [∗[NbCp★Cl4∗]2(μ-dmpe)], 5. Reactions of [NbCp★Cl4] with appropriate amounts of MgClMe yield the correspodning dimethyl [NbCp★Cl2Me2], 6, and tetramethyl [NbCp★Me4], 7 derivatives. Similarly, when [∗[NbCp★Cl3∗2(μ-O)] an and 3 are treated with the alkylating magnesium reagent, [∗[NbCp★Me3∗]2(μ-O)], 8, and [NbCp★Cl3Me(PMe2Ph)], 9, are obtained in high yields. A new phosphanido-niobium(V) complex [NbCp★Cl3(PPh2)] 10, is formed in the reaction of the starting tetrachloro complex with one equivalent of LiPPh2. All the complexes were characterized by IR and NMR spectroscopy, and most of them were studied by mass spectrometry.
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