ΓC 6 H 2 N 3 O 7 Γ , the two ions are connected by strong asymmetric O-HΓ Γ ΓO hydrogen bonds. The cation is involved in a Z1 (zigzag) head-to-tail sequence along the b axis. The torsion angle 21 corresponds to a cis conformation. Hydrophobic layers across z = 1 2 are sandwiched between hydrophilic
l-Asparaginium nitrate
β Scribed by Aarthy, A. ;Anitha, K. ;Athimoolam, S. ;Bahadur, S. Asath ;Rajaram, R.K.
- Publisher
- International Union of Crystallography
- Year
- 2005
- Tongue
- English
- Weight
- 259 KB
- Volume
- 61
- Category
- Article
- ISSN
- 1600-5368
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β¦ Synopsis
ΓNO 3 Γ , crystallizes with two asparaginium cations and two nitrate anions in the asymmetric unit. In both asparaginium residues, protonation take place at the carboxyl O atom cis to the amine group. Cation I exists in a trans conformation, whereas cation II exhibits a gauche I conformation. A straight head-to-tail sequence is observed for one of the asparaginium cations. The crystal structure is stabilized by inter-and intramolecular hydrogen bonding.
π SIMILAR VOLUMES
Single-crystal X-ray study T = 293 K Mean '(CΒ±C) = 0.004 A Γ R factor = 0.037 wR factor = 0.090 Data-to-parameter ratio = 7.0 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.
Single-crystal X-ray study T = 293 K Mean '(CΒ±C) = 0.012 A Γ Disorder in solvent or counterion R factor = 0.062 wR factor = 0.190 Data-to-parameter ratio = 10.8 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.
A comparative study of the infrared and Raman spectra of L-valine nitrate and L-leucine nitrate helps in determining the role of hydrogen bonds in these crystals. Both compounds have carboxylic and protonated amino groups in the cation while the nitrate ion forms the anion. The wavenumbers of severa
In the L-Arg ΓΎ HNO 3 ΓΎ H 2 O system, where Arg stands for arginine and L-Argβ’2HNO 3 (II) compounds have been produced. The structures of both compounds were solved by X-ray crystallography. The asymmetric part of the triclinic unit cell (space group P1) of the (I) compound contains two monocharged