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Redetermination of 7,8-dihydroxy-2H-chromen-2-one hemihydrate

✍ Scribed by Lu, Yong-Bin ;Zheng, Qi-Tai ;Lu, Yang

Publisher: International Union of Crystallography
Year: 2006
Tongue: English
Weight: 186 KB
Volume: 62
Category: Article
ISSN: 1600-5368
DOI: 10.1107/s1600536806036919

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✦ Synopsis

The skeleton of the title compound, C 9 H 6 O 4 Á0.5H 2 O, with the water molecule located on a twofold rotation axis, consists of a coumarin that is composed of a benzene ring and a lactone ring. The hydroxyl groups, carbonyl group and water form intermolecular O-HÁ Á ÁO hydrogen bonds, which link the molecules and solvent water into a three-dimensional network. An error in the position of an H atom in the original report is corrected.

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✦ Synopsis

Redetermination of 7,8-dihydroxy-2H-chromen-2-one hemihydrate