The Thermal Dissociation of Cyanogen into Cyanide Radicals

Autor:	H. Gershinowitz, G. B. Kistiakowsky
Rok vydání:	1933
Předmět:	Hydrogen Cyanogen Cyanide Radical Inorganic chemistry Hydrogen cyanide General Physics and Astronomy chemistry.chemical_element Photochemistry Dissociation (chemistry) chemistry.chemical_compound chemistry Enthalpy of sublimation Thermal dissociation Physical and Theoretical Chemistry
Zdroj:	The Journal of Chemical Physics. 1:432-439
ISSN:	1089-7690 0021-9606
DOI:	10.1063/1.1749315
Popis:	The thermal dissociation of cyanogen into cyanide radicals around 1200°C has been studied. Determining the variation of CN concentration with temperature by the intensity of absorption bands, the heat of dissociation 77±4 kg cal. has been obtained. With this quantity the heat of dissociation of hydrogen cyanide into hydrogen atoms and cyanide radicals is calculated as 94.5±4 kg cal. By the use of existing thermochemical data these quantities are shown to be the most probable values for the energies of the C–C and C–H bonds, respectively. The heat of sublimation of carbon is calculated as 154±3 kg cal.
Databáze:	OpenAIRE
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