(1E,2E) -bis (2-aminophenyl) N'1,N'2-dihydroxyethane bis (imidothioate) as a neutral carrier in ion-selective electrode for Ni(II) and it computational studies

A PVC membrane Ni(II) ion selective electrode has been constructed using (1E,2E)-bis(2- aminophenyl)N'1,N'2-dihydroxyethanebis as membrane carrier. The electrode exhibited a good potentiometric response for Ni(II) over a wide concentration range 1.0×10-4 to 1.0×10-1M with a slope of 29.4±0.5 mV/decade a and a working pH range of 6.5-9.0. It had a fast response time of ≤20s. The best performance was observed with the membrane having 30.5% PVC, 3.0% ligand, 61.0% acetophenone and 5.5% oleic acid composition. In this work, the ligand structure studied by ab initio HF calculations using a standard 6-31G* basis set and LanL2DZ.