Acta Crystallographica Section E (Dec 2009)
(Z)-2-Hydroxy-3-(4-methoxyphenyl)acrylic acid
Abstract
In the structure of the title compound, C10H10O4, inversion dimers linked by pairs of O—H...O hydrogen bonds link the carboxylic acid groups. Further O—H...O links cross-link the dimers into sheets running along the b-axis direction.