Treatment of K[Cp*Fe(CO)2] (Cp* = η5-C5 Me5) with ClSiMe2NR 2 (R = Me, Et, iPr, Ph) in THF afforded Cp*(CO) 2Fe(CH2)4OSiMe2NR2 accompanied with ring- opening and incorporation of a THF molecule between iron and silicon atoms. On the other hand, reactions between Li[Cp*Fe(CO) 2] and ClSiMe2NR2 in diethyl ether (for R = Me, Et), or in toluene in the presence of N,N,N′,N′- tetramethylethylenediamine (TMEDA) (for R = iPr, Ph) afforded the corresponding Cp*(CO)2FeSiMe2NR2 (R = Me, Et, iPr, Ph), where the anionic complex was freshly prepared by treatment of Cp*(CO)2FeH with n-BuLi. In the case of the reaction of Li[Cp*Fe(CO)2] with ClSiMe2NPh 2, although the formation of the diphenylamino derivative Cp*(CO)2FeSiMe2NPh2 was confirmed by NMR spectroscopy, purification of the product was unsuccessful. Subsequently, the exclusive formation of Cp*(CO)2FeSiMe2NPh 2 was achieved by means of irradiation of Cp*(CO) 2FeMe and HSiMe2NPh2 in toluene.
ASJC Scopus subject areas
- Inorganic Chemistry