DECAY SEQUENCES - ION SERIES OF MASS SPECTRA HEXAMETHYLBENZENE AND HEXAKIS(TRIFLUOROMETHYL)BENZENE

Abstract

: This report on the results of the analysis of decay sequences - ion series of mass spectra: hexamethylbenzene and hexakis(trifluoromethyl)-benzene, is a continuation of the article on the ion series of benzene and hexafluorobenzene. In contrast to the six ion series of the mass spectrum of benzene, the mass spectrum of hexamethylbenzene consists of eleven series of ions. The first three ionic series of the mass spectrum of hexamethylbenzene + . M 1-3 , including the elimination of groups: ( . CH 3 +6 . H), (C 2 H 4 + 7 . H) and (C 3 H 6 + 5 . H) with the formation of ions + С 11 H 9 , + С 10 H 7 and + C 9 H 7 - the result of agmentation of methyl substituents that occur without rearrangement of the existing π - conjugations of the six-membered ring. The four final series of + . M 8-11 ions are formed upon detachment of neutral molecules C 8 H 11 and C 9 H 13 , as well as radicals . C 10 H 13 and . C 11 H 15 , in which the 6-membered ring is also retained. As a result of four series + . M 8-11 , ions + C 4 H 7 m/z 55, + C 3 H 5 m/z 41, + C 2 H 5 m/z 29 and + CH 3 m/z 15 appear. Two intermediate series