首页|Bromocresol purple in the processes of cation-anionic interactions in aqueous solutions: UV-Vis spectroscopy and computer simulation of dissimilar association

Bromocresol purple in the processes of cation-anionic interactions in aqueous solutions: UV-Vis spectroscopy and computer simulation of dissimilar association

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  • NSTL
  • Elsevier
The formation of associates between single- or double-charged anions of bromocresol purple (3,3'-dime thyl-5,5'-dibromophenolsulfonephthalein) and single-charged cations of cyanines (quinaldine blue, quinaldine red) has been investigated. The equilibrium constants of the association have been determined on the basis of UV-Vis spectroscopy data. The energy of the cation-anion interaction (the standard enthalpy of formation of ions and associates), as well as the probable structure of associates, were established using the PM7 semiempirical method. The presented results can be useful in the development of new spectroscopic methods for the detection of organic additives in water (e.g. acetone) due to the spectral properties of dissimilar associates. (C) 2021 Elsevier B.V. All rights reserved.

Bromocresol purpleDissimilar associationUV-Vis spectroscopyEnthalpy of formationSemiempirical methodCARBON-PASTE ELECTRODESPECTROPHOTOMETRIC DETERMINATIONTHERMODYNAMIC ANALYSISPH MEASUREMENTSPHENOL REDH-1-NMRHETEROASSOCIATIONWATERHYDROCHLORIDEDERIVATIVES

Shapovalov, Serghey A.

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Kharkov Natl Univ

2022

10.1016/j.saa.2021.120741

Spectrochimica acta

Spectrochimica acta

ISSN：1386-1425
年,卷(期)：2022.269
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