In a study of the effects of substituents on the formation of substituted phenyl radicals, a series of p-substituted-phenylazo-triphenylmethanes was prepared and decomposed, pX- CsH4--N= NC ( C~ HL) J, X= H, CHs, Br, NOZ, HO, CHsO, CH3CONH. The rates were determined for each compound at two temperatures (at about 43 and 53'or 53 and 64') in toluene and for two of the compounds, X= H, HO, in acetic acid and in pyridine. Energies ...
