(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 goodpotentiometric response for ni(ii) over a wide concentration range 1.0×10-4 to 1.0×10-1m with aslope 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* basisset and lanl2dz.