. Author manuscript; available in PMC: 2008 Sep 3.

Published in final edited form as: J Phys Chem B. 2007 Jan 18;111(2):408–422. doi: 10.1021/jp065403l

TABLE 1.

Gas-Phase Free Energies of Formation (kcal/mol),^a Standard Reduction Potentials (Volts) and Conventional Solvation Free Energies (kcal/mol) of Metal Ions in Different Solvents

		E_c*^b			ΔG_S^*,con(M⁺)^c
M⁺	Δ_fG₂₉₈^o[M⁺ (g)]^d	CH₃OH^e	CH₃CN	DMSO^e	CH₃OH	CH₃CN	DMSO
Na⁺	136.4	−2.728	−2.87^e		162.4	159.1
K⁺	114.1	−2.921	−3.16^e		180.2	174.7
Rb⁺	108.5	−2.912	−3.17,^e −3.316^f		186.0	178.4
Cs⁺	101.1		−3.16^e			187.8
Tl⁺	175.6	−0.379	−0.682^f	−0.352	177.3	170.4	178.0
Ag⁺	232.9	+0.764	+0.23,^e +0.096^f	+0.680, +0.668	146.4	132.4	144.3

1 kcal = 4.184 kJ.

Standard reduction potential for a standard-state solution-phase concentration of 1 mol/L. If more than a single experimental E_c* value is listed, the average value was used to determine the conventional solvation free energy.

Based on the convention that ΔG_S^*,con(H⁺) = 0.

Free energy of formation obtained following the electron convention and Fermi-Dirac statistics for the electron integrated heat capacity and entropy,¹¹⁶ for a standard-state gas-phase pressure of 1 atm.

Reference ¹²¹.

Reference ¹²².