Synthesis and spectrophotometric study of some new azodyes derived from 4,5-diphenylimidazole

الملخص EN

This study involves the preparation of three azodyes 2-( sulfapyridineazo)- 4,5-diphenyl imidazole (M1) , 2-( 2-arsonophenylazo)-4,5-diphenyl imidazole (M2) and 2-( sulfapyridineazo)- imidazole (M3) , they have been described by C.H.N.

, I.R.

and Visible spectroscopic techniques.

The acid-base properties were studied at different pH values (0.65-12) , then the ionization and protonation constants were determined.

The solvents effect were studied at different solvents polarities