N-(3,4-Dimethyl­phen­yl)maleamic acid

The title compound, C(12)H(13)NO(3), crystallizes with four independent mol­ecules in the asymmetric unit. The N—H bond and the C=O bond in the amide segment are anti to each other. The C=C double bond is cis configured and an intra­molecular O—H⋯O hydrogen bond is formed in each molecule. The mean...

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Detalles Bibliográficos
Autores principales: Gowda, B. Thimme, Tokarčík, Miroslav, Kožíšek, Jozef, Shakuntala, K., Fuess, Hartmut
Formato: Texto
Lenguaje:English
Publicado: International Union of Crystallography 2009
Materias:
Organic Papers
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2971237/
https://www.ncbi.nlm.nih.gov/pubmed/21578460
http://dx.doi.org/10.1107/S1600536809043682
Descripción
Sumario:The title compound, C(12)H(13)NO(3), crystallizes with four independent mol­ecules in the asymmetric unit. The N—H bond and the C=O bond in the amide segment are anti to each other. The C=C double bond is cis configured and an intra­molecular O—H⋯O hydrogen bond is formed in each molecule. The mean planes through the aromatic ring and the amide group –NHCO– are inclined at angles of 17.4 (3), 20.8 (2), 16.2 (2) and 11.2 (3)° in the four mol­ecules. In the crystal, inter­molecular N—H⋯O hydrogen bonds link the mol­ecules into ribbons along the b axis.

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