Spectrophotometric and Potentiometric Studies of Chelates Formed Between Some Metals and Some Azo Dyes

The chelation of phenylazo derivatives of alpha- and beta-naphthols with Co(II), Ni(II) and Cu(II) compounds have been studied in solution spectrophotometrically, while chelation with Ti(IV), Zr(II)O, Th(IV) and U(II)O2 compounds has been studied potentiometrically. The proton-ligand stability constants, the formation constants and the coordination of the chelates have been determined