Nuclear-chemical synthesis of mixed methylphenylsubstituted onium phosphorus derivatives labelled with tritium

Nuclear-chemical method based on ion-molecular reactions of tritiated phenyl-cations with organic phoshines is applicable for the synthesis of tritium-containing mixed methylphenylsubstituted onium phosphorus derivatives. Substitution of various number of methyl groups for phenyl ones in basic phosphines and in synthesized substituted phosphonium compounds respectively enabled to study the effect of space and electron factors on the process of formation of organic onium phosphorus derivatives. The yields of phosphonium compounds, the products of heterolytical decomposition of labelled diphenyl are presented; the relative reactivity of studied phosphines and stability of substituted phosphonium cations have been determined