Angewandte Chemie International Edition in English

Volume 17, Issue 2 pp. 120-121

Communication

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Binuclear Iron Complexes Containing Unsymmetrically Substituted Silanediyl Bridges^†

Priv.-Doz. Dr. Wolfgang Malisch,

Priv.-Doz. Dr. Wolfgang Malisch

Institut für Anorganische Chemie der Universität, Am Hubland, D-8700 Würzburg (Germany)

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Dipl.-Chem. Wolfgang Ries,

Corresponding Author

Dipl.-Chem. Wolfgang Ries

Institut für Anorganische Chemie der Universität, Am Hubland, D-8700 Würzburg (Germany)

Institut für Anorganische Chemie der Universität, Am Hubland, D-8700 Würzburg (Germany)Search for more papers by this author

Priv.-Doz. Dr. Wolfgang Malisch,

Priv.-Doz. Dr. Wolfgang Malisch

Institut für Anorganische Chemie der Universität, Am Hubland, D-8700 Würzburg (Germany)

Search for more papers by this author

Dipl.-Chem. Wolfgang Ries,

Corresponding Author

Dipl.-Chem. Wolfgang Ries

Institut für Anorganische Chemie der Universität, Am Hubland, D-8700 Würzburg (Germany)

Institut für Anorganische Chemie der Universität, Am Hubland, D-8700 Würzburg (Germany)Search for more papers by this author

First published: February 1978

https://doi.org/10.1002/anie.197801201

Citations: 25

^†

Synthesis and Reactivity of Silicon-Transition Metal Complexes, Part 13. This work was supported by the Deutsche Forschungsgemeinschaft.—Part 12: W. Malisch, W. Ries, Chem. Ber., in press.

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Graphical Abstract

All three possible stereoisomers are formed on light-induced decarbonylation of the complex (1) in the solid state and in solution at room temperature (detected by NMR spectroscopy). Spectra recorded immediately after dissolution of the crystalline transformation product reveal only the cis isomers.

References

1 Synthesis and Reactivity of Silicon-Transition Metal Complexes, Part 13. This work was supported by the Deutsche Forschungsgemeinschaft.—Part 12: W. Malisch, W. Ries, Chem. Ber., in press.
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2 R. D. Adams, M. D. Brice, F. A. Cotton, Inorg. Chem. 13, 1080 (1974).
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3 B. J. Aylett, H. M. Colquhoun, J. Chem. Res. (S) 1, 148 (1977);
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C. S. Cundy, B. M. Kingston, M. F. Lappert, Adv. Organomet. Chem. 11, 253 (1973).
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5 R. E. Dessy, R. L. Pohl, R. B. King, J. Am. Chem. Soc. 88, 5121 (1966).
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6 The intensities of the vCO bands (Table 1) decrease monotonically with decreasing wave number. Cf. N. Flitcroft, D. A. Harbourne, I. Paul, P. M. Tucker, F. G. A. Stone, J. Chem. Soc. A 1966, 1130.
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7 An analogous cyclization reaction has already been observed with (CH₃)₂Ge-bridged complexes: R. C. Job, M. D. Curtis, Inorg. Chem. 12, 2514 (1973).
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8 This finding is confirmed by the ¹³C{¹H}-NMR spectrum (in C₆D₆). δC₅H₅ = 83.83, 84.27, 84.86, 85.30; δCH₃ = 7.89, 8.97, 10.09; δCO_term = 212.57.
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9 Investigations presently being carried out on the activation parameters of this process should clarify whether the cis/cis and cis/trans isomerizations are independent processes.
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Volume17, Issue2

February 1978

Pages 120-121

Binuclear Iron Complexes Containing Unsymmetrically Substituted Silanediyl Bridges^†

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Binuclear Iron Complexes Containing Unsymmetrically Substituted Silanediyl Bridges†

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Binuclear Iron Complexes Containing Unsymmetrically Substituted Silanediyl Bridges^†