Proton affinities of hydrogen halides determined by the molecular beam photoionization method
- 15 July 1979
- journal article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 71 (2) , 605-609
- https://doi.org/10.1063/1.438412
Abstract
Gas-phase proton affinities of HF (95.5±1.4 kcal/mol), HCl (135±1 kcal/mol), and HBr (141±1 kcal/mol) have been measured along with the HX+–HX binding energies for the HCl and HBr systems (20±2 and 23±2 kcal/mol, respectively) by photoionization of van der Waals molecules produced in a supersonic expansion. A detailed discussion of the potentialities and limitations of the method is presented.Keywords
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