N-(4-Chloro-3-nitro-phen-yl)maleamic acid

In the mol-ecule of the title compound, C(10)H(7)ClN(2)O(5), the acyclic C=C double bond is cis configured. The C=O and O-H bonds of the acid group are in a relatively rare anti position to each other, due to the donation of intramolecular hydrogen bond to the amide by the carboxyl group. The nitro...

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Bibliographic Details
Published in:Acta crystallographica. Section E, Structure reports online Structure reports online, 2012-03, Vol.68 (Pt 3), p.o873-o873
Main Authors: Chaithanya, U, Foro, Sabine, Gowda, B Thimme
Format: Article
Language:English
Subjects:
Organic Papers
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Summary:In the mol-ecule of the title compound, C(10)H(7)ClN(2)O(5), the acyclic C=C double bond is cis configured. The C=O and O-H bonds of the acid group are in a relatively rare anti position to each other, due to the donation of intramolecular hydrogen bond to the amide by the carboxyl group. The nitro group is significantly twisted [dihedral angle = 66.9 (3)°] out of the plane of the remaining atoms, which are almost coplanar (r.m.s. deviation for non-H atoms except the nitro group = 0.202 Å). In the crystal, N-H⋯O hydrogen bonds link the mol-ecules into zigzag chains running along the b axis.
ISSN:1600-5368
1600-5368
DOI:10.1107/S1600536812008021