%0 Journal Article %A Castro Gausinet, Irene de %A Mata de la Mata, Francisco Javier de la %A Gómez Rubio, Manuel %A Gómez Sal, Pilar %A Royo Gracia, Pascual %A Selas Pérez, José Manuel %T Monocyclopentadienyl alkyl alkylidene niobium(V) and tantalum(V) complexes. X-ray crystal-structure of Ta(η5-CP')(CH2SiMe3)2(CHSiMe3) %D 1992 %@ 0277-5387 %U http://hdl.handle.net/10017/4610 %X Reactions of monocyclopentadienyl complexes M(η5-Cp′)Cl4 with trimethylsilylmethyl lithium leads to the formation of alkylidene derivatives M(η5-Cp′)(CH2SiMe3)2(CHSiMe3), where M = Nb (1); Ta (2); Cp′= C5Me5 and M = Ta; Cp′ Me3Si(C5H4) (3), 1,3-(Me3Si)2(C5H3) (4). The new complexes were characterized by 1H and 13C NMR spectroscopy and the molecular structure of 2 was studied by X-ray diffraction methods. %K Metal-carbon bonds %K Abstraction %K Derivatives %K Ligands %K Ciencia %K Química inorgánica %K Science %K Chemistry, inorganic %~ Biblioteca Universidad de Alcala