Single-crystal X-ray study T = 105 K Mean '(C±C) = 0.002 A Ê R factor = 0.036 wR factor = 0.105 Data-to-parameter ratio = 32.2 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.
dl-Valine dl-valinium picrate
✍ Scribed by Anitha, K. ;Annavenus, S. ;Sridhar, B. ;Rajaram, R. K.
- Publisher
- International Union of Crystallography
- Year
- 2004
- Tongue
- English
- Weight
- 396 KB
- Volume
- 60
- Category
- Article
- ISSN
- 1600-5368
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✦ Synopsis
Single-crystal X-ray study T = 293 K Mean '(C±C) = 0.006 A Ê Disorder in main residue R factor = 0.058 wR factor = 0.181 Data-to-parameter ratio = 12.4 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.
📜 SIMILAR VOLUMES
is composed of two crystallographically independent methionine residues and a picrate anion. The methionine and protonated methioninium residues are bonded through a strong O-HÁ Á ÁO hydrogen bond, and an inversion-related dl1 head-to-tail sequence along the a axis is observed in the zwitterion. The
In the title compound, C 5 H 12 O 2 N + ÁH 2 PO 4 À , the valinium and phosphate ions are held together by a strong OÐHÁ Á ÁO hydrogen bond. The valinium residue has gauche II conformation. The phosphate anion links the amino acids, extending as a chain running along the b axis.