Gravimetric and spectrophotometric determination of hexafluoroantimonate with tetraphenylarsonium chloride, nitron and ferroin

Archer, Vernon S.; Twelves, Ronald B.

doi:10.1016/0039-9140(68)80006-2

Cited by 5 publications

(1 citation statement)

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“…The presence of a quaternary nitrogen atom in the molecule of the nitron determines the ability to form ionic associates with chelates of metals in aqueous phase without protonation, as opposed to the amines. [27][28][29][30] Nitron is an important reagent for the determination of nitrates, perchlorates, borates, or traces of gold. [31][32][33][34] The liquid-liquid extraction is a part of the chemistry of the solutions and the coordination compounds.…”

Section: Racheva Et Almentioning

confidence: 99%

Study on the Equilibria of the Complex Formation of the Ion-pair of Germanium(IV) with 4-Nitrocatechol and 1,4-Diphenyl-3-(phenylamino)-1H-1,2,4-triazole

Racheva

Stojnova

Divarova

et al. 2017

ACSi

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The complex formation of the ion-pair formed between the anionic chelate of Ge(IV)-4-nitrocatechol (4-NC) and the cation of 1,4-diphenyl-3-(phenylamino)-1H-1,2,4-triazole (Nitron, Nt) in the liquid-liquid extraction system Ge(IV)-4-NC-Nt-H 2 O-CHCl 3 was studied by spectrophotometry. The optimum extraction-spectrophotometric conditions for the complex formation were established. The validity of Beer's law was checked and some analytical characteristics of the system were calculated. The effect of co-existing ions and reagents on the process of complex formation was investigated. The association process in aqueous phase and the extraction equilibria were studied and quantitatively characterized. The following key constants of the processes were calculated: association constant, distribution constant, extraction constant and recovery factor. The molar ratio of the reagents was determined by independent methods. A reaction scheme and a general formula of the complex were suggested.

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