The title compound, C9H7NO4, forms centrosymmetric dimers through intermolecular O-H⋯O 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. © 2005 International Union of Crystallography Printed in Great Britain - all rights reserved.

Manivannan Srinivasan

Babu Varghese

IIT Madras is a public technical and research university located in Chennai, Tamil Nadu. Founded in 1959, it is recognised as an Institute of National Importance.

IIT Madras has been ranked as the top engineering institute in India for four years in a row by the National Institutional Ranking Framework of the MHRD

It currently offers undergraduate, postgraduate and research degrees across 16 disciplines in Engineering, Sciences, Humanities and Management. About 596 faculty belonging to science and engineering departments and centres of the Institute are engaged in teaching, research and industrial consultancy.

IIT Madras

3-Nitrocinnamic acid

Acta Crystallographica Section E: Structure Reports Online

Journal of Applied Crystallography

SIR92 – a program for automatic solution of crystal structures by direct methods

Angewandte Chemie International Edition in English

Patterns in Hydrogen Bonding: Functionality and Graph Set Analysis in Crystals

Acta Crystallographica Section C Crystal Structure Communications

Structure of 4-iodo-trans-cinnamic acid and a study of carboxyl group disorder

Structure of the photostable form of p-nitrocinnamic acid

Journal	Acta Crystallographica Section E: Structure Reports Online
ISSN	16005368
Open Access	No