Redetermination of 5-fluorocytosine monohydrate
✍ Scribed by Portalone, Gustavo ;Colapietro, Marcello
- Publisher
- International Union of Crystallography
- Year
- 2006
- Tongue
- English
- Weight
- 254 KB
- Volume
- 62
- Category
- Article
- ISSN
- 1600-5368
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✦ Synopsis
The title compound, 4-amino-5-fluoro-2-hydroxypyrimidine monohydrate, C 4 H 4 FN 3 OÁH 2 O, with two molecules of each comprising the asymmetric unit, has been redetermined, providing a significant increase in the precision of the geometric parameters.
📜 SIMILAR VOLUMES
Single-crystal X-ray study T = 105 K Mean '(C±C) = 0.001 A Ê R factor = 0.033 wR factor = 0.092 Data-to-parameter ratio = 15.7 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.
A redetermination at 150 K of the structure of violuric acid monohydrate, C 4 H 3 N 3 O 4 ÁH 2 O, confirms that the space group is non-centrosymmetric Cmc2 1 , despite indications from the intensity statistics and possible molecular symmetry that it could be centrosymmetric Cmcm. Issues raised in th