Phenyl-substituted Phosphonitrile Fluoride Trimers

Submitted by CHRISTOPHER W. ALLEN and THERALD MOELLERf Cheeked by JAMES E. DUNNING  

The fluorine atoms are readily replaced by phenyl or o-, m-, and p-tolyl groups on treatment with the corresponding lithium 

The resulting clear filtrate is passed through a 30 X 700-mm. chromatographic column which is one-third filled with silica gel.J With low-boiling petroleum ether as the eluting agent and a rapid flow rate, 200-ml. fractions are collected until no 

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