Facile Generation of Bimetallic Titanium Alkoxides with Silacycloalkyl- or Silacycloalkenyldiamide Ligands: Oxo-Insertion Involving Dimerization or Rearrangement
作者:Sung-Joon Kim、Il Nam Jung、Bok Ryul Yoo、Sungil Cho、Jaejung Ko、Sang Hern Kim、Sang Ook Kang
DOI:10.1021/om000955q
日期:2001.4.1
The reaction between the spirosiladiazatitanacyclobutane complexes (cyclo)Si(NBut)(2)TiMe2 (1) and (cyclo)Si(NBut)(2)TiMeCl (3a) and dioxygen proceeds by insertion of an oxygen molecule into a Ti-C bond of 1 and 3a, yielding methoxy-bridged titanium dimer [(cyclo)Si(NBut)(2)Ti(mu -OMe)Me](2) (2) or [(cyclo)Si(NBut)2Ti(mu -OMe)Cl](2) 4a), respectively. In contrast, the reaction of the titanium(IV) dichloride complex (cyclo)Si(NBut)(2)-TiCl2 (5a) with O-2 gives hydrazido complete [((NBuNBut)-N-t-(cyclo)SiO}TiCl2](2) (6a) as a result of facile formation of the Si-O-Ti bonds upon autoxidation.