Silicon-fluorine chemistry XII. Enthalpy of formation of polydifluorosilylene and the silicon-silicon bond energy

The energy of fluorination of polydifluorosilylene (SiF 2) x has been measured in a bomb calorimeter. From the combustion results the standard enthalpy of formation ΔH f o(SiF 2, solid polymer, 298.15 K) was determined to be −(186.3 ± 1.7) kcal mol −1. Combination of this result with various subsidi...

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Published in:The Journal of chemical thermodynamics 1970, Vol.2 (3), p.439-443
Main Authors: Adams, G.P., Sharp, K.G., Wilson, P.W., Margrave, J.L.
Format: Article
Language:English
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Summary:The energy of fluorination of polydifluorosilylene (SiF 2) x has been measured in a bomb calorimeter. From the combustion results the standard enthalpy of formation ΔH f o(SiF 2, solid polymer, 298.15 K) was determined to be −(186.3 ± 1.7) kcal mol −1. Combination of this result with various subsidiary data gives a silicon-silicon bond energy in the polymer of (46.8 ± 6.7) kcal mol −1, a value comparable with that in other straight chain fluorosilanes.
ISSN:0021-9614
DOI:10.1016/0021-9614(70)90015-7