Enthalpic discrimination of homochiral pairwise interactions: Enantiomers of proline and hydroxyproline in (dimethyl formamide (DMF)+H2O) and (dimethylsulfoxide (DMSO)+H2O) mixtures at 298.15K.
- Resource Type
- Article
- Authors
- Hu, Xin-Gen; Liu, Jia-Min; Guo, Zheng; Liang, Hong-Yu; Jia, Zhao-Peng; Cheng, Wei-Na; Guo, Ai-Di; Zhang, He-Juan
- Source
- Journal of Chemical Thermodynamics. Aug2013, Vol. 63, p142-147. 6p.
- Subject
- *ENANTIOMERS
*PROLINE
*DIMETHYLFORMAMIDE
*DIMETHYL sulfoxide
*BINARY mixtures
*AMINO acids
*HYDROXYL group
- Language
- ISSN
- 0021-9614
Highlights: [•] The h xx values of each α-amino acids decrease gradually with the mass fractions of cosolvents. [•] The absolute values of h xx of l-enantiomers are larger than d-enantiomers in the range w COS =0 to 0.30. [•] The h xx values of the two proline enantiomers are all positive at each composition of mixed solvents. [•] When a hydrophilic hydroxyl group is introduced into proline enantiomers, the values of h xx become negative. [ABSTRACT FROM AUTHOR]