7a,8,9,10-Tetrahydrobenzo[f]cyclopenta[b]chromen-10-one
✍ Scribed by Huo, Fangjun ;Yin, Caixia ;Yang, Pin
- Publisher
- International Union of Crystallography
- Year
- 2004
- Tongue
- English
- Weight
- 146 KB
- Volume
- 60
- Category
- Article
- ISSN
- 1600-5368
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✦ Synopsis
Single-crystal X-ray study T = 298 K Mean '(C±C) = 0.003 A Ê R factor = 0.037 wR factor = 0.098 Data-to-parameter ratio = 10.3 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.
📜 SIMILAR VOLUMES
The title compound, C 18 H 18 Br 2 N 4 O 6 , is an important intermediate for the synthesis of molecular clips. Intermolecular N-HÁ Á ÁO hydrogen bonds form eight-membered rings. No stacking is observed.
In the title compound, C 29 H 23 NO 2 , the quinolinone moiety is planar and the pyran ring is in a half-chair form. The cyclopentene fused with the pyran ring adopts an envelope conformation. There are CÐHÁ Á ÁO, CÐHÁ Á Á% and %Á Á Á% intermolecular interactions.
The crystal structure of the title compound, C 15 H 18 N 2 OÁH 2 O, exhibits four independent hydrogen bonds, of types N-HÁ Á ÁO and O-HÁ Á ÁO. The water molecules participate in extensive hydrogen bonding and link molecules into a twodimensional network.
In the pyridone ring of the title compound, C 20 H 22 ClNO 2 , single and double bonds alternate, though allowing some degree of delocalization. Two C atoms in the cyclooctene ring are disordered, indicating some ¯exibility of the large ring.