Reinvestigation of L-tryptophan picrate: Establishment of the existence of the L-tryptophan L-tryptophanium dimeric cation
- Author(s)
- A.M. Petrosyan, Michel Fleck, V. V. Ghazaryan
- Abstract
A crystal structure redetermination of the L-tryptophan picrate crystal previously studied by Ishida et al. (Chem. Pharm. Bull. 41 (1993) 433-438) showed that it comprises L-tryptophan L-tryptophanium dimeric cation, one picrate anion and picric acid. The O-O distance of the O-H-O hydrogen bond in the dimeric cation is equal to 2.470(6) Å. The infrared spectrum of the crystal was registered and analyzed. The infrared spectrum of the crystals contains a broad absorption band centered at ca. 1170 cm-1, which is assigned to the stretching vibration of the O-H bond.
- Organisation(s)
- Department of Mineralogy and Crystallography
- External organisation(s)
- National Academy of Sciences of the Republic of Armenia
- Journal
- Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
- Volume
- 104
- Pages
- 486-491
- No. of pages
- 6
- ISSN
- 1386-1425
- Publication date
- 11-2012
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 104017 Physical chemistry, 105113 Crystallography, 104015 Organic chemistry
- Keywords
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/dbec6915-6d23-4810-aa19-22c08150ed88