Excess enthalpies of binary solvent mixtures of methanol, ethanol and 1-propanol with formamide, N-methylformamide and N,N-dimethylformamid

(Vapour+liquid) equilibrium in (N,N-dimethylacetamide+methanol+water) at the temperature 313.15 K

“…Note that the absolute values of Q ¼ G E =RT are small, especially for (amide + water) mixtures. This is in contrast with the heat of mixing data: for the aqueous mixtures, the mixing process is strongly exothermic [16][17][18][19][20][21], and for the amide mixtures with methanol, the thermal effects are comparatively large as well [21][22][23][24][25][26]. Thus we can draw two conclusions.…”

Excess volumes and excess enthalpies of N-methyl-2-pyrrolidone with branched alcohols

“…NMP is completely soluble with water at all temperatures and also soluble with most organic solvents. It is well known that amides (NMP) interact with water or alcohols by dipole-dipole interactions, and form some hydrogen-bonded complexes or hetero-associates [3][4][5][6].…”

(Vapour+liquid) equilibrium in (N,N-dimethylacetamide+ethanol+water) at the temperature 313.15K

“…This is in contrast with the heat of mixing data: for the (amide + ethanol) mixtures the thermal effects are comparatively large. According to the literature data [16][17][18], the H E values at equimolar composition are: +599 J AE mol À1 for NMF, +486 J AE mol À1 for DMF, +195 J AE mol À1 for NMA, À74 J AE mol À1 for DMA, and +495 J AE mol À1 for 2PY (for NMP there are no data). Thus, we can draw two conclusions.…”