Photoelectron spectroscopy of simple amides and carboxylic acids

C. R. Brundle, D. W. Turner, M. B. Robin, H. Basch

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Abstract

The accidental near-degeneracies of the no (oxygen nonbonding) and π2 (antisymmetric pi) MO's of formamide and formic acid have been investigated using photoelectron spectroscopy and SCF calculations of the successive ionization potentials. It is concluded that ionization from no preceeds that from π2 in both of these compounds, but that the reverse order obtains in M-methylformamide and N,N-dimethylformamide. The close correspondence between the profiles of the no and π2 photoelectron bands and the Rydberg band profiles observed optically is used in making a more detailed assignment of the optical bands. All ionization potentials below 20 eV are reported for each of the four compounds.

Original languageEnglish
Pages (from-to)292-296
Number of pages5
JournalChemical Physics Letters
Volume3
Issue number5
DOIs
StatePublished - May 1969
Externally publishedYes

Bibliographical note

Funding Information:
It is a pleasure to acknowledge the help of Mr. N. A. Kuebler with several of the experimental details, and the Scientific Research Council for a grant to one of US (CR Brundle).

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