Abstract
The paper presents a new azolidone derivative - 5-[2-(4-hydroxyphenyl)hydrazineylidene]-4-iminothiazolidin-2-one (HPIT) studies and its interaction results with iridium(IV) ions. The Ir(IV) with this reagent in the pH = 5.0 without heating forms a stable complex (?max = 328 nm). The stoichiometric ratio of Ir(IV) to the reagent in complex is 1:1. The molar absorptivity and Sandell's sensitivity are 5.57×103 L mol-1 cm-1 and 0.034 µg cm-2 respectively. The calibration curve is linear in the range of 1.0-11.5 µg mL-1 of Ir(IV) (R = 0.9996). The limit of detection is 0.4 µg mL-1. Based on the conducted investigation a rapid and simple, spectrophotometric method for the determination of Ir(IV) using 5-[2-(4-hydroxyphenyl)hydrazineylidene]-4-iminothiazolidin-2-one as a chromophoric reagent was developed. The iridium(IV) was determined in various synthetic mixtures and alloys.
Highlights
ObjectivesFor this reasons the goal of our research was to find the effective analytical reagents for spectrophotometric Ir(IV) determination using azolidones derivatives
The relevance of platinum metals and their compounds usage encourages the development of simple, rapid, inexpensive, selective, and sensitive methods for the determination of trace amounts of these metals in complex samples
We researched a new reagent – 5-[2-(4-hydroxyphenyl)hydrazineylidene]-4-iminothiazolidin-2-one, which is a derivative of azolidone (Fig. 1)
Summary
For this reasons the goal of our research was to find the effective analytical reagents for spectrophotometric Ir(IV) determination using azolidones derivatives
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