摘要：

Enthalpies of mixing of (R)-and (S)-enantomers of liquid chiral compounds such as benzyl-(l-phenyl-ethyl)-amine (1),1-phenyleth-ylamine (2),1-phenyl-ethanol (3),butyric acid oxiranylmethyl ester (4),4-methyl-[l,3]dioxolan-2-one (5),2-Chloromethyloxirane (6)and 3-hydroxyisobutyric acid methyl ester (7)have been measured over the whole range of mole fractions at 298.15 K,albeit very small val-ues.Mixing of heterochiral liquids of R-\ + S-1,R-5 + S-5,and R-7 + 5-7 realized enthalpic stabilization over the whole range of mole fractions,whereas that of R-2 + S-2,R-3 + S-3,R-4 + S-4,and R-6 + 5-6 realized enthalpic destabilization over entire compositions.The extreme values of enthalpies of mixing and the intermolecular interaction obtained by the molecular mechanics calculations showed a linear correlation,except few the compounds measured.

展开