Thermodynamics of sorption of 1,3,4-oxadiazoles and 1,2,4,5-tetrazines according to reversed phase high-performance liquid chromatography View Full Text


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Article Info

DATE

2010-01

AUTHORS

B. R. Saifutdinov, S. V. Kurbatova, N. S. Emel’yanova

ABSTRACT

The thermodynamics of sorption of several 1,3,4-oxadiazoles and 1,2,4,5-tetrazines on octadecyl silica gel from aqueous acetonitrile solutions of different compositions has been studied. The thermodynamic characteristics of the chromatographic systems under study were calculated. The dependences of the standard molar change in the entropy term of the dependence lnk-1/T and the enthalpy after the transfer of the sorbate from bulk solution to the surface layer on the content of the organic component in the eluent were analyzed for the compounds. It was shown that the structure of sorbate molecules affected the thermodynamic characteristics of their quasichemical sorption and solvation. Tendencies of compensation were found for sorption and solvation of the heterocyclic compounds under study. More... »

PAGES

673-678

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/s0036024410040266

DOI

http://dx.doi.org/10.1134/s0036024410040266

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1034509145


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