Hydration of Complexes of Some Univalent Cations with Polyethylene Glycol Ligands in Nitrobenzene Saturated with Water

The hydration numbers of the complexes ML + formed by some univalent cations (M + = Li + , Na + , NH 4 + , K + , Rb + and Cs + ) and polyethylene glycol ligands (L = PEG 200, PEG 300 and PEG 400) in nitrobenzene saturated with water were determined. The highest differences between the hydration numbers of the cations M + and the complexes ML + were found in the systems with the Na + cation.