Facile generation of bimetallic titanium alkoxides with silacycloalkyl- orsilacycloalkenyldiamide ligands: Oxo-insertion involving dimerization or rearrangement

Authors
Kim, SJ Jung, IN Yoo, BR Cho, S Ko, J Kim, SH Kang, SO
Citation
Sj. Kim et al., Facile generation of bimetallic titanium alkoxides with silacycloalkyl- orsilacycloalkenyldiamide ligands: Oxo-insertion involving dimerization or rearrangement, ORGANOMETAL, 20(8), 2001, pp. 1501-1503
Citations number
32
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
ORGANOMETALLICS
ISSN journal
02767333 → ACNP
Volume
20
Issue
8
Year of publication
2001
Pages
1501 - 1503
Database
ISI
SICI code
0276-7333(20010416)20:8<1501:FGOBTA>2.0.ZU;2-V
Abstract
The reaction between the spirosiladiazatitanacyclobutane complexes (cyclo)S i(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 reac tion of the titanium(IV) dichloride complex (cyclo)Si(NBut)(2)-TiCl2 (5a) w ith 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.