The electron‐impact‐induced fragmentation of acridine

Abstract

Studies of both high and low resolution spectra, and of metastable decompositions occurring in both the first and second field-free regions of the mass spectrometer have led to a postulated scheme for the fragmentation of acridine under electron-impact. There is no specific loss of label from either [9-2Hl]acridine or [4,5-2H,]acridine in any fragmentation, nor is there any total scrambling of label in either molecular ion prior to loss of HCN. There is certainly some degree of scrambling preceding HCN loss from [MI+. at 70 eV, but this does not involve the 9-H to any detectable extent. There is no strong evidence for the acridine molecular ion having the same structure as that of four other C,,H,N isomers.

Facile pentagon formation in the dissociation of polyaromatics

“…This signal also possibly contains a small contribution of a product formed through C 2 H 2 -loss accompanied by dehydrogenation, as was observed in high mass resolution experiments. 27 Mass peaks at m/z = 151 and 150 represent (further) dehydrogenation of products formed from HCN-and/or C 2 H 2 -loss. The middle trace in Fig.…”

“…Experimental and theoretical investigations of PAHs and graphene have revealed the profound influence of edge topology on electronic and structural properties of the species. [22][23][24][25][26] Both acridine and phenanthridine have received considerable attention in the past, 19,27 but their precise dissociation mechanisms are poorly characterized.…”