[3]Ferrocenophanes with a tetramethyldisiloxane bridge: Synthesis and molecular structure

Hisatome M., Watanabe J., Kawajiri Y., Yamakawa K. (1990) Organometallics9: 497

See, for example: Herberhold M., Leitner P., Thewalt U. (1990) Z. Naturforsch.45b: 1503; Herberhold M., Leitner P. (1991) J. Organomet. Chem.411: 233; Herberhold M., D�rnh�fer C., Scholz A., Jin G.-X. (1992) Phosphorus Sulfur Silicon Relat. Elem.64: 161; Zanello P., Opromolla G., Casarin M., Herberhold M., Leitner P. (1993) J. Organomet. Chem.443: 199

Siemeling U., Neumann B., Stammler H.-G. (1993) Chem. Ber.126: 1311

The synthesis of2 was reported as early as 1961 by Schaaf et al. using a strategy similar to ours: Schaaf R. L., Kan P. T., Lenk C. T. (1961) J. Org. Chem.26: 1790

It is well known that strained disilanes can react with dioxygen to give disiloxanes; see, for example: Atwell W. H., Uhlmann J. G. (1973) J. Organomet. Chem.52: C21; Seyferth D., Vick S. C. (1977) J. Organomet. Chem.125: C11; Sakurai H., Kobayashi T., Nakadaira Y. (1978) J. Organomet. Chem.162: C43

Krallmann R. (1991) Thesis, Bielefeld, p. 158

It cannot be ruled out that ferrocenium ions participate in the reaction as catalyst: Tamao K., Kumada M., Takahashi T. (1975) J. Organomet. Chem.94: 367

Elschenbroich C., Salzer A. (1988) Organometallchemie, 2nd ed. Teubner, Stuttgart, p. 380; Freyberg D. P., Robbins J. L., Raymond K. N., Smart J. C. (1979) J. Am. Chem. Soc.101: 892

Wells A. F. (1991) Structural Inorganic Chemistry, 5th ed. (4th corr. repr.). Clarendon Press, Oxford, p. 1000

There has been some controversy about the reasons for this unusual behaviour; for a comprehensive discussion, see: Shambayati S., Blake J. F., Wierschke S. G., Jorgensen W. L., Schreiber S. L. (1990) J. Am. Chem. Soc.112: 697

Additional material to the structure determination can be ordered from Fachinformationszentrum Energie-Physik-Mathematik, D-76344 Eggenstein-Leopoldshafen, Federal Republic of Germany, referring to the deposition numbers CSD-57418, to the names of the authors and the citation of the paper.

Ibers J. A., Hamilton W. C. (eds.) (1974) International Tables for X-ray Crystallography, Vol. IV. Kynoch Press, Birmingham