Excess enthalpies of binary mixtures of butylamines + propanols at 298.15 K

摘要: The molar excess enthalpies of eight systems butylamines + propanols were determined at 298.15 K using a twin-microcalorimeter. All exothermic and large. An equilibrium constant K 1 expressed in terms mole fractions standard thermodynamic properties formation (Δf H, Δf G, S) 1:1 complex evaluated by ideal mixtures monomeric molecules their associated complexes. Concentration dependence the FT-Raman spectrum showed systematic changes bands. Spectroscopic considerations based on this ab initio calculations performed Mp2/6-311G(d,p) level theory. Interaction energies between butylamine propanol calculated supermolecular NBO methods. results discussed with previous to clarify steric positional effect amino hydroxyl group.