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Thermochemistry of Acetylene and Allylene and the Valency of Carbon

Abstract

RECENTLY, Long and Norrish1 have shown that when the energy associated with the tetravalent state of carbon is systematically taken into account it is possible to bring order into the thermochemistry of carbon. They support the value of 190 kcal. for the latent heat of sublimation of graphite into free atoms at the lowest energy-level of tetravalence (5S), and 125 k.cal. for the latent heat of sublimation into the divalent (3P) state. Thus, the energy obtained in the 5S3P conversion is 65 kcal.

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  1. Long and Norrish, Proc. Roy. Soc., A, 187, 337 (1946).

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BUSCH, R. Thermochemistry of Acetylene and Allylene and the Valency of Carbon. Nature 163, 179–180 (1949). https://doi.org/10.1038/163179b0

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