Iron silylenes

Table 3. Mossbauer data of iron silylene complexes (Fe as standard)...

Lewis-base-stabilized iron-silylene complexes have been prepared by Corriu (equation 19) and Zybill (equation 17 and 18) in a similar fashion to that described for... 

Many of the bridged silylene complexes show complex fluxional behavior or slow isomerization between different isomeric forms. An example is the iron-silylene complex shown in Scheme 11, in which the proposed mechanism is illustrated. A full discussion appears in Ogino and Tobita s review338. 

Gas phase ion chemistry has provided the means for obtaining labile intermediates that are thought to play a relevant role in solution chemistry. An example is given by cationic iron-silene and iron-silylene complexes that have been studied as model systems in... 

Keywords silylene complexes, iron silylene, density frmctional calculations... 

The photochemical degradation of polysilyl derivatives of iron leads to mixtures of monosilyl complexes. A possible mechanism involving iron silylene complexes and 1,3 migrations of groups between ligated silicon atoms was proposed (Scheme 2)106. 

The photochemical loss of CO can be used to generate unusual species and intermediates that would be otherwise be difficult to obtain. For example, the photochemical conversion of ( / -cp)Fe(CO)2SiMe2SiMe3 into (i/ -cp)Fe(CO)2SiMe3 has been found to proceed via the iron-silylene intermediate ( / -cp)Fe(CO)2SiMe2(=SiMe2), which undergoes further photoreactions to give the product (Scheme... 

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