On the energetic and structure of 2-piperidinic acid

Javier Cuervo, Luis Rincón, Rafael Almeida, Asiloé J. Mora, Gerzon Delgado, Alí Bahsas

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


In this paper we investigate, by means of ab initio (RHF) and density functional theory calculations, the energetic, electronic and structural properties of the 2-piperidinic acid, in gas phase and explicitly interacting with a number of water molecules. We find that two water molecules, placed in the vicinity of the amino acid, are needed in order to stabilize the zwitterionic structure. These two water molecules and the amino acid form a cyclic structure that maximizes the hydrogen bond cooperativity. These results are compared with the crystal structure of the 2-piperidinic acid.

Original languageEnglish
Pages (from-to)191-199
Number of pages9
JournalJournal of Molecular Structure
Issue number1-3
StatePublished - 26 Sep 2002
Externally publishedYes


  • 2-Piperidinic acid
  • Ab initio calculation
  • Density functional theory calculations
  • Hydrogen bond
  • X-ray structure


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