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Piperazinediium bis-(2-carboxy-pyridine-3-carboxyl-ate).

ABSTRACT: The asymmetric unit of the title salt, C(4)H(12)N(2) (2+)·2C(7)H(4)NO(4) (-) or pipzH(2) (2+)·2(py-2,3-dcH(-)), prepared by a reaction between pyridine-2,3-dicarboxylic acid (py-2,3-dcH(2)) and piperazine (pipz), contains a monoanion and half of a centrosymmetric dication. The anionic fragment individually has two intra-molecular hydrogen bonds, an almost linear O-H?O bond between two carboxyl-ate groups and a C-H?O bond between the aromatic ring and carboxyl-ate group. Other O-H?O, N-H?O and C-H?O hydrogen bonds are responsible for three-dimensional expansion of the structure.

SUBMITTER: Aghabozorg H

PROVIDER: S-EPMC2915291 | biostudies-literature | 2007 Dec

REPOSITORIES: biostudies-literature

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Piperazinediium bis-(2-carboxy-pyridine-3-carboxyl-ate).

Aghabozorg Hossein H Manteghi Faranak F Ghadermazi Mohammad M

Acta crystallographica. Section E, Structure reports online 20071212 Pt 1

The asymmetric unit of the title salt, C(4)H(12)N(2) (2+)·2C(7)H(4)NO(4) (-) or pipzH(2) (2+)·2(py-2,3-dcH(-)), prepared by a reaction between pyridine-2,3-dicarboxylic acid (py-2,3-dcH(2)) and piperazine (pipz), contains a monoanion and half of a centrosymmetric dication. The anionic fragment individually has two intra-molecular hydrogen bonds, an almost linear O-H⋯O bond between two carboxyl-ate groups and a C-H⋯O bond between the aromatic ring and carboxyl-ate group. Other O-H⋯O, N-H⋯O and C- ...[more]

PMID: 21200798

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4,4'-Bipyridinium bis-(2-carboxy-pyridine-3-carboxyl-ate).

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