Reactions involving fluoride ion. Part 14. Anionic σ-complexes from polyfluorinated s-triazines

Abstract

The reaction between trifluoro-s-triazine and caesium fluoride in tetramethylene sulphone gave a σ-complex which has been isolated and characterized. Analogous reactions with perfluoro-mono- and -di-isopropyl-s-triazines led to σ-complexes which were detected by ¹⁹F n.m.r. but which were not isolated. No evidence was obtained, however, for the formation of a σ-complex from perfluorotri-isopropyl-s-triazine.