The purpose of this work is the determination of the electronegative induction exerted by a CF3 group on the amine function of a CF3 (CH2). NH2 series. We have observed for CF~(CHZ) ZNHZ a dissociation constant Kg= 5 X and for CF~ CH~ NHZ a value of 5 X for both unfluorinated propyl-and ethylamines we observed the accepted value 4.5 XA CF, group therefore affects the basicity of a NH2 function adversely by a factor of IO5 when ...
