dl-Valinium dihydrogen phosphate
✍ Scribed by Ravikumar, Bagavath Singh ;Sridhar, Balasubramanian ;Rajaram, Ramaswamy Karunanandam
- Publisher
- International Union of Crystallography
- Year
- 2002
- Tongue
- English
- Weight
- 294 KB
- Volume
- 58
- Category
- Article
- ISSN
- 1600-5368
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✦ Synopsis
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.
📜 SIMILAR VOLUMES
ÁH 2 PO 4 À , the racemate has crystallizes in a non-centrosymmetric space group, Pc. However, both the phenylalaninium and dihydrogen phosphate residues are related by a pseudo-inversion center at about (0.5, 0.25, 0.25). Each phosphate anion forms a strong OÐHÁ Á ÁO hydrogen bond with a phenylalan
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.
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.