Abstract
Insertion of one equivalent of methyl(phenyl)ketene or cyclohexyl(phenyl)ketene into the Sb–Si bond of [FeCp*(CO)2{Sb(SiMe3)2}] afforded η1-stibaallyliron complexes [(OC)2(η5-C5Me5)Fe–Sb(SiMe3)C(OSiMe3) CR1Ph] (R1 = c-C6H11 or Me). The remaining Sb–Si bond was readily cleaved by C2Cl6 to give complexes [(OC)2Cp*Fe–Sb(Cl)C(OSiMe3)CR1Ph]. Treatment of the latter where R1 = Ph with LiSb(SiMe3)2·2.8thf, LiCCPh, or LiC(N2)SiMe3 resulted in the formation of compounds [(OC)2Cp*Fe–Sb(R)C(OSiMe3)CPh2 [R = Sb(SiMe3)2, CCPh or C(N2)SiMe3]. The new compounds were characterized by elemental analyses and spectra (IR, 1H, 13C, 29Si NMR). The molecular structure of [(OC)2Cp*Fe–Sb(Cl)C(OSiMe3)CPh2] was elucidated by a single crystal X-ray diffraction analysis.
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