PHOSPHA-S-TRIAZINES .3. SYNTHESES AND PROPERTIES OF 1,3-BIS(DIARYLPHOSPHA)-5-PERFLUOROALIPHATIC-2,4,6-TRIAZINES

Diphospha-s-triazines, namely 1,3-bis(diphenylphospha)-5-perfluoro-n-heptyl-2,4,6-triazine and 1,3-bis(diphenylphospha)-5-perfluoroalkylether-2,4,6-triazines, [(C6H5)2PN]2[C3F7O[CF(CF3)CF2O]xCF(CF3)CN], were synthesized by interaction of imido-tetraphenyl-diphosphinic acid trichloride and the respective amidines. Yields of 30-65% were realized; the perfluoroalkylether substituted compounds were liquids whereas the perfluoro-n-heptyl group-containing material was a sold. The diphospha-s-triazines exhibited characteristic infrared absorptions and mass spectral breakdown patterns. One of the 1,3-bis(diphenylphospha)-5-perfluoroalkylether-2,4,6-triazines was found to be an effective anti-corrosion and oxidation inhibiting additive for perfluoroalkylether fluids. © 1979.