D2O–H2O solvent isotope effects on the volumetric properties of aqueous 1,3-dimethyl-2-imidazolidinone between (278.15 and 318.15)K

Volumetric properties of (water+hexamethylphosphoric triamide) from (288.15 to 308.15)K

“…The given table contains also the isobaric volume (cubic) expansion coefficients, a p,2 , computed by using the experimental temperature-dependent data on q 2 and second-order polynomial equation [14,35] …”

“…Apparent molar volumes V /,i (x i ) of the components of the binary mixtures studied at the desired temperatures were calculated from the equations [14,26] …”

“…From this viewpoint, the binary mixtures of water with an aprotic dipolar amide are one of the most interesting [6][7][8][9][10][11][12][13][14]. The organic component molecules in these mixtures do not act as H-bonding donors, however, they are electron lone-pair donors capable of forming the strong hydrogen bonds with water molecules [7,10,[13][14][15][16].…”

“…The organic component molecules in these mixtures do not act as H-bonding donors, however, they are electron lone-pair donors capable of forming the strong hydrogen bonds with water molecules [7,10,[13][14][15][16]. Among such binary mixtures, a {water + hexamethylphosphoric triamide (HMPT)} is the liquid system, the component molar volumes of which differ each other one order of magnitude, and the organic component as a net solvent has a number of wideused distinctive characteristics [16][17][18][19][20][21][22][23].…”

Water as a solute in nitromethane: Effect of H2O–D2O isotope substitution on the solution volumetric properties between 278.15K and 318.15K

“…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].…”