Alkali extended Huckel

Simon, W., Moif, W. ., Meier, P. Ch. Specificity for Alkali and Alk e Earth Cations of Synthetic and Natural Organic Complexing Agents in Membranes. Vol. 16, pp. 113-160. Simonetta, M., GavezzotA, A. Extended Huckel Investigation of Reaction Mechanisms. Vol. 27, pp. 1-43. 

Figure 21 Potential energy diagram of the ground and the first excited electronic states of [Ag(CN)32 (eclipsed configuration) as plotted from extended Huckel calculations. The excimer [Ag(CN)32 corresponds to the potential minimum of the excited state. The optical transitions shown are (a) excimer emission, (b) solid state excitation and (c) dilute solution absorption. (Reproduced with permission from Omary MA and Patterson HH (1998) Luminescent homoatomic exciplexes in dicyanoargentate 0) ions doped in alkali halide crystals 1. Exciplex tuning by site-selective excitation. Journal of the American Chemical Society 120 7606-7706.

Wood and co-workers have reported an extensive series of careful measurements from 0.1 to 0.8 mol kg on alkali halides, nitrates and carboxylates, and on tetramethylammonium halides. An equilibrium technique was used. The results were fitted to extended Debye-Huckel equations. The solvent has a high dielectric constant (178 at 30.5°C) and osmotic and activity coefficients are higher at corresponding concentrations than in water. The sequences of specific differences are, however, the same as in water. This implies that the... 

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