Dissociative photoionization of carboxamides with tunable synchrotron radiation

The ionization-, isomerization-, and fragmentation behavior of carboxamides is studied with tunable synchrotron radiation. The systematic approach of increasing the length of the alkyl substituents of the studied system one by one allows for phenomenological comprehension and generalization of the gas-phase ion chemistry of amides. The thus erected solid basis of knowledge is successfully employed to predict the properties of homologues amides and to understand the dissociative ionization of more complex dipeptide models with biochemical relevance.