Aryl-imido niobium complexes with chloro-silyl and aryl-η-amidosilyl cyclopentadienyl ligands: X-ray structure of the constrained-geometry compound [Nb(η5-C5H4SiMe2-η1-NAr)(NAr)Cl](Ar=2,6-Me2C6H3)

Authors
Arteaga Müller, Rocío Alejandra; Sánchez-Nieves Fernández, JavierUniversity of Alcalá Author; Royo Gracia, PascualUniversity of Alcalá Author; González Mosquera, Marta ElenaUniversity of Alcalá Author
Identifiers
Permanent link (URI): http://hdl.handle.net/10017/4173
DOI: 10.1016/j.poly.2005.02.027
ISSN: 0277-5387
Publisher
Elsevier
Date
2005
Affiliation
Universidad de Alcalá. Departamento de Química Inorgánica
Funders
We gratefully acknowledge the Ministerio de Educación y Ciencia (Project MAT2004-02614) and DGUI-Comunidad de Madrid (Project GR/MAT/0622/2004) (Spain) for financial support. R.A.-M. acknowledges MCyT for a fellowship
Bibliographic citation
Polyhedron, 2005, v. 24, n. 11, p. 1274-1279
Keywords
Niobium
Constrained-geometry
Half-sandwich
Imido
Hydrolysis
Project
MAT2004-02614 (Ministerio de Educación y Ciencia)
GR/MAT/0622/2004 (Comunidad de Madrid)
Document type
info:eu-repo/semantics/article
Version
info:eu-repo/semantics/publishedVersion
Publisher's version
http://dx.doi.org/10.1016/j.poly.2005.02.027
Rights
(C) Elsevier, 2005
Access rights
info:eu-repo/semantics/openAccess
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Abstract
Reactions of the magnesium imides [Mg(NAr)(THF)]6 (Ar = 2,6-Me2C6H3, 1a; Ph, 1b) with [NbCpClCl4] (CpCl = η5-C5H4(SiMe2Cl)) afforded the imido complexes [NbCpClCl2(NAr)] (Ar = 2,6-Me2C6H3, 2a; Ph, 2b) in good yield. Compound 2a reacted with excess LiNH(2,6-Me2C6H3) to give the silyl-η-amido complex [Nb(η5-C5H4SiMe2-η1-NAr)Cl(NAr)] (Ar = 2,6-Me2C6H3, 3a). Hydrolysis of the Si–Cl bond of compounds 2a and 2b yielded the dinuclear complexes [{NbCl2(NAr)}2{(η5-C5H4SiMe2)2(μ-O)}] (Ar = 2,6-Me2C6H3, 4a; Ph, 4b), respectively. All of the new compounds reported were characterized by NMR spectroscopy and the molecular structure of 3a was determined by X-ray diffraction methods.
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