Reinvestigation of L-tryptophan picrate: Establishment of the existence of the L-tryptophan L-tryptophanium dimeric cation

被引：12

作者：

Petrosyan, A. M. ^{[1
]}

Fleck, M. ^{[2
]}

Ghazaryan, V. V. ^{[1
]}

机构：

[1] NAS Armenia, Inst Appl Problems Phys, Yerevan 0014, Armenia

[2] Univ Vienna, Inst Mineral & Crystallog, A-1090 Vienna, Austria

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2013年 / 104卷

关键词：

L-tryptophan picrate; Structure; IR spectrum; Dimeric cation; VIBRATIONAL-SPECTRA; CRYSTAL-STRUCTURE; ALANINIUM PICRATE; AMINO-ACIDS; SARCOSINE; HEXAFLUOROSILICATES; NITRATE; SALTS;

D O I：

10.1016/j.saa.2012.11.050

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

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 center dot center dot center dot O distance of the O-H center dot center dot center dot O hydrogen bond in the dimeric cation is equal to 2.470(6) angstrom. 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. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：486 / 491

页数：6

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