Spectrophotometric Studies of 4-[N’-(4-Imino-2-oxo-thiazolidin-5-ylidene)-hydrazino]-benzenesulfonic acid as a Reagent for the Determination of Palladium

Abstract

The spectrophotometric behavior of a new, first-time synthesized reagent -4-[N'-(4-imino-2-oxo-thiazolidin-5-ylidene)-hydrazino]-benzenesulfonic acid (ITHBA), has been investigated. A simple, rapid, accurate, selective and sensitive method for the spectrophotometric determination of Pd(II) ions using this reagent was developed. The optimal conditions for the formation of the complexes were found. The molar absorptivity at λ = 438 nm is 7.5 × 10 3 L mol -1 cm -1 , and Beer's law is observed for the concentrations ranging from 0.2-2.2 μg mL -1 Pd(II). The effects of extraneous ions were investigated. The method proved to be successful in determination of palladium in the intermetallides and resistor. The accuracy of spectrophotometric palladium assay in real objects with 4-[N'-(4-imino-2-oxo-thiazolidin-5-ylidene)-hydrazino]-benzenesulfonic acid has been confirmed by voltammetric or atomic absorption spectroscopy method.

Spectrophotometry of 4-(4-imino-2-oxo-thiazolidine-5-ilazo)-benzoic acid

“…Значення ефективних молярних коефіцієнтів світлопоглинання залежно від кислотності середовища Table 2 The values of effective molar absorption coefficients depending on the medium acidity рН 1,0 2,0 3,0 4,0 5,0 6,0 7,0 8,0 9,0 10,0 11,0 ε·10 -3 , л·моль -1 ·см -1 24 21 21 22 20 18 19 19 21 16 3,0 Оскільки 4-(4-іміно-2-оксо-тіазолідин-5-ілазо)-бензойна кислота є потенційним лікарським препаратом, то важливо є контролювати її вміст на різних етапах досліджень. Лінійна залежність оптичної густини від концентрації п-ІТIБК, а також високі значення ефективних молярних коефіцієнтів світлопоглинання дають можливість визначати цей реагент за власним світлопоглинанням (табл.…”

Spectrophotometric Determination of Ru(IV) Using 5-Hydroxyimino-4-imino-1,3-thiazolidin-2-one as a Novel Analytical Reagent

“…13 These compounds exhibit different biological activity, in particular hypoglycemic, antimicrobial, fungicidal, antiviral, antiinflammatory, and antitumor. [14][15][16] In our previous studies, the physicochemical properties of the new reagents: 5-hydroxyimino-4-imino-1,3thiazo lidin-2-one (HITO), 4-[N'-(4-imino-2-oxo-thiazolidin-5-ylidene)-hydrazino]-benzenesulfonic acid and 1-(5-benzylthiazol-2-yl)azonaphthalen-2-ol, which belong to the class of azolidones, and the interaction of Pd(II), Rh(III), Pt(IV), Ir(IV), Cu(II), Zn(II), Cd(II), Ni(II), and Hg(II) ions with these reagents were investigated [17][18][19][20][21][22][23][24][25][26][27][28] and the methods of their determination with good metrological characteristics were proposed. [18][19][20][21][22][23][24][25]27,28 Therefore in this paper, we investigated the interaction of ruthenium(IV) ions with 5-hydroxyimino-4-imino-1,3-thiazolidin-2-one.…”

Antioxidant properties of some novel derivatives thiazolo[4,5-b] pyridine

“…Some of them are H3 receptor antagonists (Walczyn´ski et al 2005), or act as antagonists of metabotropic glutamate receptors 5 (mGluR5) (Lin et al 2009), they are of high inhibitory activity with respect to the receptors of the epidermal growth factor (Komoriya et al 2006), and were revealed to activate the GK enzyme in vitro and significantly reduces glucose levels (Singh et al 1995). Thiazolopyridine derivatives have also been used as sensitive analytical reagents (Lozynska et al 2015;Tymoshuk et al 2019). Thus, the research to explore different chemical modifications avenues of thiazolo[4,5-b]pyridine-2-ones to obtain novel active compounds should be continued.…”