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Fragmentation and rearrangement processes in the mass spectra of perhalogenoaromatic compounds—VI. Perfluoroaromatic heterocyclic derivatives of sulfur, selenium and tellurium
Author(s) -
Cohen S. C.,
Massey A. G.,
Lanthier G. F.,
Miller J. M.
Publication year - 1972
Publication title -
organic mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0030-493X
DOI - 10.1002/oms.1210060404
Subject(s) - tellurium , chemistry , fragmentation (computing) , bromine , selenium , sulfur , mass spectrum , metastability , electron ionization , iodine , crystallography , medicinal chemistry , inorganic chemistry , ion , organic chemistry , ionization , computer science , operating system
The mass spectra of the compounds C 12 F 8 M 2 (M = S, Se), (I), C 12 F 8 M (M = S, Se, Te), (II) and C 12 F 8 SX 2 (X = Br, I), (III), have been measured. Results indicate that sulfur‐carbon bonds are more stable under electron bombardment than either selenium‐carbon or tellurium‐carbon bonds. Numerous metastable‐supported transitions are evident, which are incorporated into comprehensive fragmentation schemes for these compounds. Many metastable transitions, not previously reported, were observed for the fluorocarbon fragments and a fragmentation scheme is reported. The bromine and iodine‐containing compounds behave remarkably like the heterocyclic systems, I and II, presumably due to initial loss of Br 2 or I 2 to form a ring system of type II.