Fragmentation and rearrangement processes in the mass spectra of perhalogenoaromatic compounds—VI. Perfluoroaromatic heterocyclic derivatives of sulfur, selenium and tellurium

✍ Scribed by S. C. Cohen; A. G. Massey; G. F. Lanthier; J. M. Miller

• Publisher: John Wiley and Sons
• Year: 1972
• Tongue: English
• Weight: 484 KB
• Volume: 6
• Category: Article
• ISSN: 1076-5174
• DOI: 10.1002/oms.1210060404

✦ Synopsis

The mass spectra of the compounds C,,F,Mz (M = S, Se), (I), C12F,M (M = S, Se, Te), (11) and C,,F,SX, (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 11, presumably due to initial loss of Br, or I, to form a ring system of type 11.