Homochiral vs. heterochiral sodium core dimers of tartaric acid esters: A mass spectrometry and vibrational spectroscopy study - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Molecular Structure Année : 2020

Homochiral vs. heterochiral sodium core dimers of tartaric acid esters: A mass spectrometry and vibrational spectroscopy study

Résumé

The mixed sodium core dimers of dimethyl-L-tartrate (Lmt) and the two enantiomers of diisopropyl tartrate (Lipt and Dipt) are studied by mass spectrometry coupled with laser vibrational spectroscopy. Infra-Red Multiple Photon Dissociation (IRMPD) spectra of the two diastereomer sodium-core dimers, namely, LmtLiptNa + and LmtDiptNa + , are identical in the fingerprint region but show a slight difference in the OH stretch region. Comparison to ab initio calculations indicates that the formed complexes probably reflect the structures pre-existing in solution. The difference between LmtLiptNa + and LmtDiptNa + arises from the presence of an additional Na + …O interactions in the homochiral complex. The two complexes also differ in the strength and nature of the OH…OC hydrogen bond. Highlights:  Sodium ion-core dimers of tartaric acid esters are studied by mass spectrometry and laser spectroscopy  Infra-red Multiple photon spectroscopy coupled with quantum chemical calculations aim at explaining the chirality effects observed in these systems.
Fichier principal
Vignette du fichier
Total tartrate 6 décembre 2019.pdf (1022.23 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-02441869 , version 1 (16-01-2020)

Identifiants

Citer

Katia Le Barbu-Debus, Debora Scuderi, Valéria Lepère, Anne Zehnacker. Homochiral vs. heterochiral sodium core dimers of tartaric acid esters: A mass spectrometry and vibrational spectroscopy study. Journal of Molecular Structure, 2020, 1205, pp.127583. ⟨10.1016/j.molstruc.2019.127583⟩. ⟨hal-02441869⟩
46 Consultations
124 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More