REDUCTION BY ELECTRON AND HYDRIDE ATTACHMENT TO DOUBLY-CHARGED HETEROCYCLIC CATIONS IN FAST-ATOM-BOMBARDMENT MASS-SPECTROMETRY - INFLUENCE OF THE MATRIX

A study of the fast-atom bombardment spectra of positive ions which re sult from doubly charged heterocyclic cationic compounds shows the inf luence of the matrix on the nature of the spectrum. While two reductio n reactions are encountered with glycerol (electron and hydride anion attachment), the spectrum obtained with m-nitrobenzyl alcohol only con tains three expected ions with significant abundance, viz. the doubly charged cation, the deprotonated cation and the adduct ion with a brom ide anion.