Abstract
The calorimetric enthalpies of mixing of aqueous solutions of Cu(NO3)2 and Ni(NO3)2 in mixtures of water with acetonitrile (AN) at 298 K are measured over the entire range of the compositions. The ionic enthalpies of transfer from pure water to water mixed with AN are calculated. The behavioral features of d cations, as distinct from simple ions, are recognized. The contributions from the universal, chemical, and electrostatic interactions between the ion and solvent to the enthalpy of ion transfer are calculated. The structural term of the enthalpy of ion transfer that reflects the energy (enthalpy) changes in the solution induced by the chemical interaction of an ion with the solvent is obtained; the regions of d-cation resolvation in the solution are recognized as a result.
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Original Russian Text © V.N. Vandyshev, 2006, published in Zhurnal Neorganicheskoi Khimii, 2006, Vol. 51, No. 5, pp. 902–907.
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Vandyshev, V.N. Solution and solvation thermochemistry of copper(II) and nickel(II) nitrates in water and acetonitrile mixtures at 298 K. Russ. J. Inorg. Chem. 51, 836–840 (2006). https://doi.org/10.1134/S0036023606050263
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DOI: https://doi.org/10.1134/S0036023606050263