The Fourier transform IR and Raman spectra of (C 6 H 16 N 4 O 2 2+ •2NO 3 -) crystal were studied and the observed IR and Raman lines were assigned. There is extensive intermolecular hydrogen bonding in the crystal and this is responsible for the changes in the position and intensity of several band
l-Argininium dinitrate
✍ Scribed by Ramaswamy, S. ;Sridhar, B. ;Ramakrishnan, V. ;Rajaram, R. K.
- Publisher
- International Union of Crystallography
- Year
- 2001
- Tongue
- English
- Weight
- 276 KB
- Volume
- 57
- Category
- Article
- ISSN
- 1600-5368
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✦ Synopsis
Á2NO 3 À , the diprotonated argininium molecule is linked by a strong OÐHÁ Á ÁO [2.653 (7) A Ê ] hydrogen bond to the nitrate anion. The singlebonded O atom of the carboxyl group exhibits a very unusual cis conformation with respect to the -amino N atom. Chelated three-centered hydrogen bonds are observed in the case of the N and N 4 atoms with the nitrate anions. The argininium molecules are connected by type A, B and D interactions through nitrate anions.
📜 SIMILAR VOLUMES
In the title compound, C~6~H~16~N~4~O~2~ ^+^·C~2~F~3~O~2~ ^−^, the amino acid exists as a zwitterionic argininium cation, with positively charged amino and guanidinium groups and a negatively charged carboxylate group. The trifluoroacetic acid molecule is deprotonated. The stoichiometry between the
Single-crystal X-ray study T = 293 K Mean '(C±C) = 0.005 A Ê Disorder in main residue R factor = 0.044 wR factor = 0.134 Data-to-parameter ratio = 9.8 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e. ## Experimental An excess of
Single-crystal X-ray study T = 293 K Mean '(C±C) = 0.005 A Ê R factor = 0.044 wR factor = 0.132 Data-to-parameter ratio = 7.3 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.
The title compound, (C 6 H 15 N 4 O 2 ) 3 ÁCrF 6 Á3H 2 O, is isostructural with the vanadium analogue. One of the argininium cations is partially disordered over two different conformations. A complex network of N-HÁ Á ÁO, N-HÁ Á ÁF, O-HÁ Á ÁO and O-HÁ Á ÁF hydrogen bonds supports the structure.