Abstract
The reaction of Cp2TiCl2 with oximes in the two phase system (CHCl3, Cp2TiCl2)/(H2O, NaOH, oxime) leads to ionic complexes of the type [Cp2TiIV(H2O)(oximato)]+X-. Several complexes of this type were prepared. They are surprisingly stable against air and water. The following compounds are described in detail: [Cp2Ti(H2O)(ONC6H10)]NO3 (8) containing a cyclohexanoneoximato ligand, and two complexes with 1,4-cyclohexanedionedioximato ligands, namely the mononuclear complex [Cp2Ti(H2O)(ONC6H8NOH)]Cl · H2O (9) and the dinuclear complex [Cp2Ti(H2O)(ONC6H8NO)(H2O)TiCp2](NO3)2 · 4H2O (10). X-ray structure determinations show, that the ON fragment of the oximato ligand acts as side-on bonded three-electron donating ligand. The Ti atom thus has an 18-electron configuration.
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