NOVEL ACETYLENE COMPLEXES OF TITANOCENE AND PERMETHYLTITANOCENE WITHOUT ADDITIONAL LIGANDS - SYNTHESIS, SPECRAL CHARACTERISTICS - AND X-RAY-DIFFRACTION STUDY

New acetylene complexes of titanocene and permethyltitanocene CpTi(R1C 2R2) and Cp2Ti(R1C2R2) (R1 = R2 = SiMe3; R1 = Ph, R2 = SiMe3) without additional ligands have been prepared by the reaction of Cp2TiCl2 and Cp2TiCl2 with equimolar amounts of Mg and the appropriate acetylene R1C2R2 in THF. The complexes have been isolated from the reaction mixt ure in an analytically pure state and characterized by spectral method s. The structures of complexes Cp2Ti(PhC2SiMe3), Cp2Ti(PhC2SiMe3) and Cp2Ti(Me3SiC2SiMe3) have been proved by an X-ray diffraction study. Some chemical properties of the synthesized complexes have been invest igated.