Copper(I) Chemical Ionization-Mass Spectroscopic Analysis of Esters and Ketones

Article abstract of DOI:10.1021/ac50061a026

The present work lays the foundation for the understanding and evaluation of atomic metal ions as a new class of chemical ionization reagent ions.In particular, a thorough study of the gas phase ion chemistry of Cu(1+), generated by laser ionization from the pure metal, with a series of oxygenated compounds is reported.Definite patterns of reactivity for different classes of oxygenated compounds are observed which, together with an understanding of the reaction mechanisms, provide the basis for predicting the Cu(1+) chemical ionization mass spectra of new compounds with analogous functional groups.The chemistry of Cu(1+) is found to be dramatically different from that of Ti(1+) and Li(1+) reported earlier providing a significant indication of the flexibility and selectivity afforded by atomic metal reagent ions.