%0 Journal Article 
%A Alcalde Adeva, María Isabel
%A Mata de la Mata, Francisco Javier de la
%A Gómez Rubio, Manuel
%A Royo Gracia, Pascual
%A Sánchez Rodríguez, Fernando
%T Half-sandwich isocyanide, phosphine, methyl and phosphanido pentamethylcyclopentadienylniobium(V) complexes
%D 1995
%@ 0022-328X
%U http://hdl.handle.net/10017/3965
%X [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.
%K Niobium
%K Pentamethylcyciopentadienyl
%K Isocyanide
%K Phosphine
%K Phosphanido
%K Half-sandwich cpds
%K Ciencia
%K Química inorgánica
%K Science
%K Chemistry, inorganic
%~ Biblioteca Universidad de Alcala