Elektronenstoß-induzierte Fragmentierung von 1,2,3,-Thiadiazolen

The mass spectra of some alkyl-,aryl-, acyl-and aroyl-substituted 1,2,3-thiadiazoles and ofbenzothiadiazole are reported and interpreted. After the elimination of N₂ from the molecular ion a rearrangement of the M—N₂]⁺.-ion occurs producing a thioketenion-radical. Some of the subsequent fragmentation processes demand this structure. Additionally expulsion of S and ·SH respectively from the non-rearranged M—N₂]⁺.-ion is discussed.