Electrochemical Study of In(III)Complexes with oxytetracycline at Dropping Mercury Electrode

摘要

In(III)-oxytetracycline system has been studied polarographically in aqueous medium at 32 and 40 deg C.The reduction of In(II)is quasi-reversible,diffusion-controlled involving three electron transfer process.Potential vs.current data at mu=0.1 M(K.No3)have been interpreted on the basis of the stepwise formation of three complex species employing Deford and Humepsilons method.The logarithms of stability constant(log beta)of binary complexes of In(III)at 32 and 40 deg C are 4.8451,9.3979 and 14.1461 and 4.6021,9.000 and 14.1303,respectively.The values of DELTAG,DELTAH and AS at 40 deg C are also reported.