Heat of Formation of the CN Radical
- 15 May 1962
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 36 (10), 2533-2539
- https://doi.org/10.1063/1.1732330
Abstract
The vapor in equilibrium with graphite and nitrogen in the temperature range 2200°—2500°K has been analyzed with a mass spectrometer. The partial pressure of CN radicals measured in this way has been used to calculate ΔHf°(CN) = 109 kcal/mole, equivalent to D0(CN) = 7.5±0.15 ev. The results of a variety of experiments are compared with this one, and in some cases, reinterpreted. The appearance potential of CN+ from CN is found to be 14.2±0.3 ev. Other possible azocarbon species up to C6N6 have been investigated and found to be much less abundant than CN.Keywords
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