Complex Formation and Liquid-Liquid Extraction in the Niobium(V) – 2,4-Dihydroxythiophenol– Hydrophobic Amines System

  • Ali Z. Zalov Department of Chemistry, Azerbaijan State Pedagogical University, U. Gadjibekov Street 68. Baku, AZ 1000, Azerbaijan

Abstract

The formation and solvent extraction of new ion-association complexes between anionic chelat of niobium(V) with 2,4-dihydroxythiophenol (DHTP) and hydrophobic amines (HAs). The HAs were aniline (An), N-methylaniline (MAn), N,N-dimethylaniline (DAn). The optimum conditions for the extraction of mixed ligand complexes (MLC) (organic solvent, extraction time, acidity of the aqueous phase, concentration of reagents), some key constants {association constant (β), extraction constant (Kex)} and analytical characteristics were determined. The molar absorptivities of MLC were calculated ε =(3.5-3.9) × 104 L mol–1 cm–1 . The Beer’s law was applicable in the range of 2.2-100 µg/mL.

Published
Jun 1, 2015
How to Cite
ZALOV, Ali Z.. Complex Formation and Liquid-Liquid Extraction in the Niobium(V) – 2,4-Dihydroxythiophenol– Hydrophobic Amines System. Pakistan Journal of Analytical & Environmental Chemistry, [S.l.], v. 16, n. 2, p. 9, june 2015. ISSN 2221-5255. Available at: <http://pjaec.pk/index.php/pjaec/article/view/100>. Date accessed: 15 dec. 2017.