Acta Cryst. (2005). E61, o3636-o3638  [ doi:10.1107/S1600536805031879 ]

3-Nitrocinnamic acid

K. Udaya Lakshmi, S. Thamotharan, M. Srinivasan, K. Ramamurthi and B. Varghese

Abstract: The title compound, C₉H₇NO₄, forms centrosymmetric dimers through intermolecular O-HO hydrogen bonds in the crystal structure. The nitro group deviates slightly from coplanarity with the benzene ring. The benzene ring and the carboxylic acid group are in an E configuration about the ethylenic double bond.

Online 12 October 2005

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