Shifts in Electron Spectra of Nitrogen in Organic Molecules

Abstract

IN a recent communication we reported our first results on the application of ESCA (electron spectroscopy for chemical analysis) to the element carbon in organic molecules¹. 1s electrons of carbon expelled by aluminium Kα radiation were found to form two well separated electron lines in benzenecarboxylic acid; one line corresponded to the benzene carbon and the other to the carboxyl carbon. The energy difference was 4 eV. Since then we have found many similar chemical shift effects for carbon in various organic compounds. Here we report some results involving the element nitrogen.