Determination of the proton affinity of carbon dioxide by photoionization mass spectrometry | Zendy

Traeger John C. | Zendy; Kompe Barbara M. | Zendy

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Determination of the proton affinity of carbon dioxide by photoionization mass spectrometry

Author(s) -

Traeger John C.,

Kompe Barbara M.

Publication year - 1991

Publication title -

organic mass spectrometry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.475

H-Index - 121

eISSN - 1096-9888

pISSN - 0030-493X

DOI - 10.1002/oms.1210260407

Subject(s) - photoionization , chemistry , proton affinity , mass spectrometry , electron affinity (data page) , electron ionization , ionization , ionization energy , carbon dioxide , proton , analytical chemistry (journal) , ion , molecule , organic chemistry , chromatography , physics , protonation , quantum mechanics

The adiabatic ionization energies and COOH + appearance energies for a series of carboxylic acids have been measured by dissociative photoionization mass Spectrometry. Using the stationary electron convention, a heat of formation of 143.5 ± 0.7 kcal mol −1 (1 kcal = 4.184 kJ) at 298 K is derived for the carboxyl cation in the gas phase, which corresponds to an absolute proton affinity for carbon dioxide of 128.1 ± 0.7 kcal mol −1 .

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