“…The first method provides a set of volumetric characteristics that adequately reflect structure-packing rearrangements occurring during water dissolution (solvation); the second (due to the quantum nature of the D 2 O-H 2 O isotope effect [15]) allows one to establish at the molecular level the role of hydrogen bonds in structure-forming effects, which are manifested in the volumetric and other thermodynamic properties [2,3,[16][17][18][19]. Replacement of H 2 O by D 2 O in solutions is dictated by the fact that a deuteration, inducing the changes in vibration-translational motions and donor-accepting abilities of water molecules, brings about the formation of D-bonds that are stronger compared with the similar protium bonds [2,15,16,20].…”