ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Solubility and Thermodynamic Functions of Transfer for [Cr(en)₂C₂] [Cr(C₆H₅NH₂)₂(NCS)₄] from Water to Water-Organic Mixed Solvents

V. Holba

Department of Physical Chemistry, Faculty of Natural Sciences, Comenius University, SK-842 15 Bratislava

Abstract: The solubilities of cis- and trans-dichlorobis (ethylenediamine) chromium(III) salt of dianilinetetraisothiocyanatochromate(III) in water as well as in aqueous methanol, ethanol, propan-2-ol, 2-methylpropan-2-ol, acetonitrile, and ethylene carbonate were measured as a function of temperature and solvent composition. The Gibbs energies, enthalpies, and entropies of transfer of the saturating salts from water to the mixed solvents have been evaluated from solubility data. The contributions of cis- and trans-[Cr(en)₂Cl₂]⁺ ions to the Gibbs energies of transfer of the investigated salts have been calculated using the tetraphenylarsonium tetraphenylborate reference electrolyte assumption.

Full paper in Portable Document Format: 534a227.pdf

Chemical Papers 53 (4) 227–232 (1999)