Study on mechanism of fragmentation HR-MS spectra of triazolothiadiazine

Abstract

HR-MS spectra of ten derivatives 3-(7H-1,2,4-triazolo[3,4-b]-1,3,4-thiadiazin-6-yl)coumarines were recorded and interpreted. The results shown that molecular ions of the compounds are enough stable. The relation between the structure of the molecules and the mechanism of the fragmentation in the ionization of the molecules is explained.

Keywords: thiadiazin, mass spectra, mechanism of fragmentation, HR-MS, coumarin