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Journal of Solution Chemistry

, Volume 18, Issue 12, pp 1105–1116 | Cite as

Chiral recognition between enantiomeric α-aminoacids. A calorimetric study at 25°C

  • G. Barone
  • G. Castronuovo
  • P. Del Vecchio
  • V. Elia
  • S. Puzziello
Article

Abstract

Homotactic and heterotactic enthalpic pair interaction coefficients were determined at 25°C from the enthalpies of dilution of binary and ternary aqueous solutions containing the L and D forms of α-aminoacids bearing alkyl chains of increasing length (alanine, α-aminobutyric acid, valine, norvaline, leucine, isoleucine and norleucine). Significant differences were found between the values of the homotactic (h DD or h LL ) and heterotactic (h DL ) pairwise coefficients, for the enantiomers of leucine and its isomers. The role of the zwitterionic interactions is discussed to explain the nature of the chiral recognition.

Key words

α-Aminoacids zwitterions chiral recognition homotactic interaction heterotatic interactions 

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Copyright information

© Plenum Publishing Corporation 1989

Authors and Affiliations

  • G. Barone
    • 1
  • G. Castronuovo
    • 1
  • P. Del Vecchio
    • 1
  • V. Elia
    • 1
  • S. Puzziello
    • 1
  1. 1.Department of ChemistryUniversity of NaplesItaly

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