Abstract
The temperature dependence of the Raman spectrum of solid dodecamethylcyclohexasilane Si6Me12 has been studied in the temperature interval 20–235 °C. At 72 °C the substance undergoes a phase transition of an «order-disorder» type, from the ordered crystalline modification to the plastic mesophase with isotropic molecular reorientations. This phase transition is accompanied by the appearance of a conformational equilibrium in the solid state. An analogous equilibrium is also observed in a benzene solution, where the concentration of the second conformer is already noticeable at 6 °C.
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Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 1, pp. 63–65, January, 1994.
This work was carried out with the financial support of the Russian Foundation for Basic Research, project No. 93-02-16242
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Bukalov, S.S., Leites, L.A., Antipova, B.A. et al. Raman study of conformational equilibrium in plastic solid dodecamethylcyclohexasilane Si6Me12 . Russ Chem Bull 43, 57–59 (1994). https://doi.org/10.1007/BF00699135
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DOI: https://doi.org/10.1007/BF00699135