L-tryptophan L-tryptophanium chloride

V V Ghazaryan; M Fleck; A M Petrosyan

doi:10.1016/j.saa.2014.09.090

L-tryptophan L-tryptophanium chloride

Spectrochim Acta A Mol Biomol Spectrosc. 2015 Feb 5:136 Pt B:743-50. doi: 10.1016/j.saa.2014.09.090. Epub 2014 Sep 30.

Authors

V V Ghazaryan¹, M Fleck², A M Petrosyan³

Affiliations

¹ Institute of Applied Problems of Physics, NAS of Armenia, 25 Nersessyan Str., 0014 Yerevan, Armenia.
² Institute of Mineralogy and Crystallography, University of Vienna, Althanstr. 14, A-1090 Vienna, Austria.
³ Institute of Applied Problems of Physics, NAS of Armenia, 25 Nersessyan Str., 0014 Yerevan, Armenia. Electronic address: aram.m.petrosyan@gmail.com.

PMID: 25448973
DOI: 10.1016/j.saa.2014.09.090

Abstract

L-tryptophan L-tryptophanium chloride is a new salt with (A⋯A(+)) type dimeric cation. It crystallizes in the monoclinic system (space group P2(1), Z=2). The asymmetric unit contains one zwitterionic L-tryptophan molecule, one L-tryptophanium cation and one chloride anion. The dimeric cation is formed by a O-H⋯O hydrogen bond with the O⋯O distance equal to 2.5556(18) Å. The infrared and Raman spectra of the crystal are studied and compared with the spectra of L-tryptophanium chloride.

Keywords: Dimeric cation; Structure; Vibrational spectra; l-Tryptophan l-tryptophanium chloride.

MeSH terms

Cations / chemistry
Chlorides / chemistry*
Crystallography, X-Ray
Dimerization
Hydrogen Bonding
Models, Molecular
Spectrophotometry, Infrared
Spectrum Analysis, Raman
Tryptophan / analogs & derivatives*

Substances

Cations
Chlorides
Tryptophan