The β-form of trans-3-(2-nitro phen yl)prop-2-enoic acid at 130 K
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The crystal structure of a non-centrosymmetric polymorphic modification of the title compound, C9H7NO4, determined at 130 K, shows the presence of 21 screw-generated one-dimensional zigzag chains formed through catemeric C(4) syn-anti carboxylic acid hydrogen-bonding associations.
Acta Crystallographica. Section E: Structure reports online
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