THE SYNTHESIS AND THERMAL BEHAVIOUR OF CYCLO-IMIDO-PHOSPHATES

Abstract

Cyclo-tri- and tetra- μ-imido-tetraphosphate has been prepared by adding aqueous sodium acetate into a cyclo-tri- and tetraphosphazenes solution. When the sodium cyclo-tri- and tetra- μ-imido-tri- and tetraphosphate was dissolved in a acidic solution, substitution from imino group to bridging oxygen and white precipitate of imido phosphoric acid were observed. When the imidophosphates were heated, decomposition to produce many kinds of condensed phosphates with or without NH and NH₂ groups at a higher temperature were occured.