SILVER SELECTIVITY OF NOVEL MONOAZAPOLYTHIOETHER DERIVATIVES BEARING A HYDRAZONE GROUP IN THE SOLVENT-EXTRACTION

Novel acyclic and cyclic monoazapolythioether derivatives incorporatin g a substituted hydrazone group were synthesized. The acyclic and the cyclic monoazatetrathioether derivatives exhibited high Ag+ ion select ivity in the extraction with 1,2-dichloroethane. The monoazatetrathioe ther derivatives gave hypsochromic and bathochromic shifts in the visi ble absorption spectra when extracted Ag+ ion from the aqueous phase o f varying acidities into the organic phase.