New crystals of L-histidine maleates

Michel Fleck, V. V. Ghazaryan, L.S. Bezhanova, A. K. Atanesyan, A.M. Petrosyan (Korresp. Autor*in)

Veröffentlichungen: Beitrag in FachzeitschriftArtikelPeer Reviewed


Two new crystals were obtained in the system L-histidine (L-His) + maleic acid + H2O: L-His+maleateH2O (I) and L-His2+2maleate (II) in addition to two previously known species: L-His+maleate (III)and 2L-His+2maleate3H2O (IV). Crystal structures and vibrational spectra of (I) and (II) are determinedand compared with structures of (III) and (IV). L-His+maleateH2O is monoclinic (space group P21, Z = 2),L-His2+2maleate is triclinic (space group P1, Z = 2). The conformation of the histidine molecules in (I) isclosed - as it was found in (III) - whereas in (II) all molecules are in open conformation. Moreover, it isshown that in the structure published for (IV), extremely short CAH O type hydrogen bonds areincluded, which along with several other data indicate that in this structure N and C atoms in imidazolegroup of one L-His+ cation have been confused.
Seiten (von - bis)407-415
FachzeitschriftJournal of Molecular Structure
PublikationsstatusVeröffentlicht - 2013

ÖFOS 2012

  • 104017 Physikalische Chemie
  • 105113 Kristallographie
  • 104015 Organische Chemie


Untersuchen Sie die Forschungsthemen von „New crystals of L-histidine maleates“. Zusammen bilden sie einen einzigartigen Fingerprint.