Abstract
Long and Norrish emphasize in a recent communication1 the importance of the tetravalent 5S state of the carbon atom from the point of view of organic chemistry, stating that neglect to distinguish between divalent and tetravalent atomic states of carbon is mainly responsible for the apparent state of confusion characterizing at present the thermochemistry of carbon. It may be mentioned that Schmid and Gerö take a similar view in the thermochemical interpretation of their results concerning the spectrum of CO3, when they deduce 170 kcal./gm.-atom as the heat of sublimation into 5S atomic states of carbon2.
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References
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VALATIN, J. Heat of Sublimation of Carbon. Nature 158, 237 (1946). https://doi.org/10.1038/158237a0
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DOI: https://doi.org/10.1038/158237a0
