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Issue 23, 2000
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Synthesis, structure and reactivity of highly functionalized η1-stibaallyliron complexes [(OC)25-C5Me5)Fe–Sb(Cl)C(OSiMe3)[double bond, length half m-dash]CPhR] (R = Ph, Me or c-C6H11)

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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)25-C5Me5)Fe–Sb(SiMe3)C(OSiMe3)[double bond, length half m-dash] 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)[double bond, length half m-dash]CR1Ph]. Treatment of the latter where R1 = Ph with LiSb(SiMe3)2·2.8thf, LiC[triple bond, length as m-dash]CPh, or LiC(N2)SiMe3 resulted in the formation of compounds [(OC)2Cp*Fe–Sb(R)C(OSiMe3)[double bond, length half m-dash]CPh2 [R = Sb(SiMe3)2, C[triple bond, length as m-dash]CPh 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)[double bond, length half m-dash]CPh2] was elucidated by a single crystal X-ray diffraction analysis.

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Publication details

The article was received on 11 Sep 2000, accepted on 13 Oct 2000 and first published on 16 Nov 2000


Article type: Paper
DOI: 10.1039/B007366K
Citation: J. Chem. Soc., Dalton Trans., 2000,0, 4379-4384

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    Synthesis, structure and reactivity of highly functionalized η1-stibaallyliron complexes [(OC)25-C5Me5)Fe–Sb(Cl)C(OSiMe3)[double bond, length half m-dash]CPhR] (R = Ph, Me or c-C6H11)

    L. Weber, L. Pumpenmeier, H. Stammler and B. Neumann, J. Chem. Soc., Dalton Trans., 2000, 0, 4379
    DOI: 10.1039/B007366K

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