The association of normal and tertiary butylamine in mixtures with n-hexane according to isothermal vapour pressure measurements

Aliphatic Amines: A Critical Analysis of the Experimental Enthalpies of Formation by Comparison with Theoretical Calculations

“…The amino substituted cycloalkanes with 3−8 carbons in the ring (Figure 1) are considered in this work. On the basis of good agreement between the experimental and calculated Δ f H m °(g) values, the experimental data for cyclopropyl- (53), cyclopentyl- (55), and cyclohexylamine (56) are recommended as reference values (Table 1). The enthalpy of vaporization of cyclobutylamine (54) obtained by Good et al 95 using the experimental liquid-phase enthalpy of formation and estimated enthalpy of vaporization.…”

Heat capacity of 1-pentylamine and 1-hexylamine: Experimental determination and modeling through a two-state association model (TSAM)

“…It is well known that in the pure state the amines are weakly associated by the formation of N HÁÁÁN hydrogen bonds. From vapour pressure and spectroscopic measurements, it has been shown that the dimerisation energy and the energy for the formation of higher oligomers are nearly the same, ranging from 8.5 to 13.5 kJ Á mol À1 [10][11][12]. Although phase equilibria of amines and their mixtures have been extensively studied, the thermodynamic phase properties have received less attention.…”

Thermodynamics of organic mixtures containing amines. VIII. Systems with quinoline

“…Primary and secondary amines are weakly self-associated [1][2][3][4][5][6][7][8]. Note that their Trouton's constants (table 1) are close to the value of non-associated species (92.05 J Á mol À1 Á K À1 [9]).…”