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Study on the Complex Equilibria of Molybdenum(VI) With 3,5-Dinitrocatechol and Ditetrazolium Salt

Study on the Complex Equilibria of Molybdenum(VI) With 3,5-Dinitrocatechol and Ditetrazolium Salt

Kirila Stojnova, Petya Racheva, Vidka Divarova, Kristina Bozhinova, Vanya Lekova

Acta Chim Slov. 2016;63(3):654-60.

PMID: 27640393

Abstract:

The complex formed between an anionic chelate of Mo(VI)-3,5-dinitrocatechol (3,5-DNC) with the cation of 3,3'-(3,3'-dimethoxy-4,4'-biphenylene)bis(2,5-diphenyl-2H-tetrazolium chloride) (Blue Tetrazolium Chloride, BTC) in the liquid-liquid extraction system Mo(VI)-3,5-DNC-BTC-H2O-CHCl3 was studied. The optimum conditions for the complex formation and extraction of the ion-associated complex were established by spectrophotometry. The molar ratio of the reagents was determined by independent methods. The validity of Beer's law was checked and some analytical characteristics were calculated. The association process in aqueous phase and the extraction equilibria were investigated and quantitatively characterized. The following key constants of the processes were calculated: association constant, distribution constant, extraction constant and recovery factor. Based on this, a reaction scheme, a general formula and a structure of the complex were suggested.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP7659292	3,5-Dinitrocatechol		7659-29-2	Price

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