## Abstract Novel heterocycles [1,2,5]selenadiazolo[3,4‐__e__][1,4]diazepines **3a‐c**, [1,2,5]thiadiazolo[3,4‐__e__]‐[1,4]diazepines **7a‐c**, [1,2,5]selenadiazolo[3,4‐__e__][1,4]oxaepines **4a,b**, [1,2,5]thiadiazolo[3,4‐__e__]‐[1,4]oxazepines **9a‐c** and [1,2,5]selena(or thia)diazolo[3,4‐__c__]
2-Ethyl-5H-1,3,4-thiadiazolo[3,2-a]pyrimidin-5-one
✍ Scribed by da Silva, Luiz Everson ;Joussef, Antonio Carlos ;Foro, Sabine
- Publisher
- International Union of Crystallography
- Year
- 2006
- Tongue
- English
- Weight
- 188 KB
- Volume
- 63
- Category
- Article
- ISSN
- 1600-5368
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📜 SIMILAR VOLUMES
The title compound, C 19 H 18 N 2 O 3 S, shows favourable activity against HIV-1. The phenyl ring is twisted with respect to the pyrimidine ring by 61.56 (9) . Intermolecular N-HÁ Á ÁO and C-HÁ Á ÁO hydrogen bonding links the molecules into a supramolecular chain structure and stabilizes the crystal
Single-crystal X-ray study T = 293 K Mean '(C±C) = 0.003 A Ê R factor = 0.039 wR factor = 0.114 Data-to-parameter ratio = 14.9 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.