2-(4-Carb­oxy­piperidinium-1-yl)pyridine-3-carboxyl­ate

The title compound, C(12)H(14)N(2)O(4), crystallizes as a zwitterion. A negative charge is delocalized in the deprotonated carboxyl group attached to the pyridine ring. The piperidine N atom accepts a proton and the ring is transformed into a piperidinium cation. There is an intra­molecular N—H⋯O hy...

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Detalles Bibliográficos
Autores principales: Fan, Ping, Ge, Chunhua, Sun, Mingjun, Li, Weiwei, Shang, Runshan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: International Union of Crystallography 2012
Materias:
Organic Papers
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3297954/
https://www.ncbi.nlm.nih.gov/pubmed/22412757
http://dx.doi.org/10.1107/S1600536812005752
Descripción
Sumario:The title compound, C(12)H(14)N(2)O(4), crystallizes as a zwitterion. A negative charge is delocalized in the deprotonated carboxyl group attached to the pyridine ring. The piperidine N atom accepts a proton and the ring is transformed into a piperidinium cation. There is an intra­molecular N—H⋯O hydrogen bond between the protonated NH and a carboxyl­ate O atom. In the crystal, an O—H⋯O hydrogen bond between the carboxyl group and the carboxyl­ate O atom of another mol­ecule generates a helix along the b axis.

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