Abstract
GASEOUS silicon difluoride has been observed in spectral studies1, and polymers of composition (SiF2)n were prepared by Schmeisser2 from magnesium and dibromodifluorsilane. However, a convenient preparation of both silicone difluoride gas and polymer was first described by Pease3 in 1958, in which silicon tetrafluoride was passed at low pressures over silicon at temperatures above 1,050° C. Pease showed that gaseous silicon difluoride would polymerize at low temperatures to form a rubbery polymer, and that it could be reacted with halogens or unsaturated organic molecules to give compounds containing SiF2 groups.
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References
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TIMMS, P., KENT, R., EHLERT, T. et al. Some Properties of Silicon Difluoride. Nature 207, 187–188 (1965). https://doi.org/10.1038/207187b0
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DOI: https://doi.org/10.1038/207187b0
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