The mass spectra of s‐triazines

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Abstract
The mass spectra of twenty‐one s‐triazines have been interpreted. An unusual feature noted in the spectra of some of the compounds is transfer of a hydrogen atom of a side chain to a nitrogen atom of the s‐triazine ring; two such shifts are suggested as a rationale for the unusual loss of nitrogen from a hydrazide derivative. The fragmentation of triamino‐ and some diamino‐ derivatives indicates that imino tautomers play a significant role. The spectra of aryldiamino s‐triazines suggest that the site of a substituent in the aryl ring is important in some cases in directing the decomposition; some transitions have been rationalised on the basis of the juxtaposition of the substituent in relation to a nitrogen atom of the heterocyclic ring.

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