Abstract
Hydroxy-4-isopropoxy-5-bromoacetophenone oxime (HIBAO) has been synthesized and used as an analytical reagent for gravimetric and spectrophotometric determination of Pd(II). In pH range of 2.0 to 6.0 this reagent gives water insoluble yellow coloured complex with Pd(II). The reagent has been used for gravimetric determination of Pd(II). Interference of many cations and anions in gravimetric determination is studied for respective metals. Metal to ligand ratio of the complex has been determined using spectrophotometric methods. The stoichiometry of Pd(II) complex is 1:2 (M:L). The complex obeys the Beer law up to 53.21 ppm of Pd(II). The molar absorptivity and Sandell's sensitivity of the complex have also been calculated. The stability constant and Gibb's free energy change at 300 K are reported. Applicability of the reagent has been checked by determining palladium in palladised carbon. The IR spectra of ligand and complex has also been studied to establish the nature of linkage of metal ion with ligand.
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