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H. Stüger, H. Rautz, G. Kickelbick:
"Fe-Mössbauer Spectra and X-ray Structures of Bipolar Ferrocenylhexasilanes";
in: "Organosilicon Chemistry V - From Molecules to Materials", N. Auner, J. Weis (ed.); Wiley-VCH, Weinheim, 2003, ISBN: 3-527-30670-6, 462 - 466.

Linear and cyclic ferrocenylhexasilanes 1,6-FeSi₆Me₁₂-X [X = Me, -C₆H₄CH=C(CN)₂], 1,3- and 1,4-Fe-Si₆Me₁₀-X [X = Me, -C₆H₄CH=C(CN)₂], have been synthesized and their Mössbauer spectra have been measured. All compounds possess localized electronic Structures on the Mössbauer timescale and partial FeIII character of the iron atom due to Cp->(Si_n) electron transfer. The Mössbauer data obtained, furthermore, indicate considerable aryl-ferrocenyl interaction via the hexasilane moiety. The single-crystal X-ray Structures of 1,3- and 1,4-Fe-Si₆Me₁₀ -C₆H₄CH=C(CN)₂ exhibit the cyclohexasilane ring in chair conformation with the bulky Fe and aryl substituents in equatorial positions, while the open-chained analogue exhibits a perfect all-trans geometry.

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