The mass spectra of some pentafluorophenylthio derivatives

Abstract
Ionic fragmentations induced by electron‐impact on compounds of the type C6F5SX (X  H, CH3, COCH3, Cl, C6F5) and (C6F5S)2, (C6F5S)2Hg, (C6F5S)3As and (C6F5SCH2)2 have been studied. Principal features of the mass spectra are reported. The [C6F5S]+ ion (m/e 199) is predominant and its mode of fragmentation has been deduced. The precursor ions for m/e 199 have been examined in (C6F5)2S, (C6F5S)2, (C6F5S)2Hg, (C6F5S)3As and C6F5SCl. Ion kinetic energy spectra of (C6F5)2S, (C6F5S)2, (C6F5S)2Hg and C6F5SCl have been recorded, and all contain peaks corresponding to the fragmentation of the [C6F5S]+ ion.