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A cocrystal of pyridine-2,4-dicarboxylic acid and serine.

ABSTRACT: The title compound, pyridine-2,4-dicarboxylic acid-S-serine (1/1), C(7)H(5)NO(4)·C(3)H(7)NO(3), has serine in its zwitterionic form. The crystal structure is stabilized by an extensive series of inter-molecular O-H?O, N-H?N and N-H?O hydrogen bonds, forming a three-dimensional network.

SUBMITTER: Liang P

PROVIDER: S-EPMC2915001 | biostudies-literature | 2007 Dec

REPOSITORIES: biostudies-literature

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A cocrystal of pyridine-2,4-dicarboxylic acid and serine.

Liang Peng P

Acta crystallographica. Section E, Structure reports online 20071206 Pt 1

The title compound, pyridine-2,4-dicarboxylic acid-S-serine (1/1), C(7)H(5)NO(4)·C(3)H(7)NO(3), has serine in its zwitterionic form. The crystal structure is stabilized by an extensive series of inter-molecular O-H⋯O, N-H⋯N and N-H⋯O hydrogen bonds, forming a three-dimensional network. ...[more]

PMID: 21200918

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Pyridine 2,4-Dicarboxylic Acid Suppresses Tomato Seedling Growth.

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Hemipiperazinediium bis-(pyridine-2,6-dicarboxyl-ato-?O,N,O')gallate(III) pyridine-2,6-dicarboxylic acid dihydrate.

Project description:The asymmetric unit of the title compound, (C(4)H(12)N(2))(0.5)[Ga(pydc)(2)]·pydcH(2)·2H(2)O, where pydcH(2) is pyridine-2,6-dicarboxylic acid, C(7)H(5)NO(4), contains one half of a centrosymmetric piperazinediium dication, one anion, one uncoord-inated pydcH(2) mol-ecule and two uncoordinated water mol-ecules, one of which is disordered over two sites in a 1:1 ratio. In the anion, the Ga(III) ion is coordinated by four O atoms [Ga-O = 1.9706?(16)-2.0494?(15)?Å] and two N atoms [Ga-N = 1.9660?(18) and 1.9709?(17)?Å] from two pydc ligands in a distorted octa-hedral geometry. The crystal structure exhibits inter-molecular O-H?O, N-H?O and O-H?N hydrogen bonds and ?-? inter-actions [centroid-centroid distances of 3.5359?(13) and 3.6550?(14)?Å].

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Synthesis and structural characterisation of amides from picolinic acid and pyridine-2,6-dicarboxylic acid.

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Propane-1,3-diaminium-2-carboxy-pyridine-6-carboxyl-ate-pyridine-2,6-dicarboxylic acid-water (1/2/2/8).

Project description:The title proton-transfer compound, C(3)H(12)N(2) (2+)·2C(7)H(4)NO(4) (-)·2C(7)H(5)NO(4)·8H(2)O or (pnH(2))(pydcH)(2).2(pydcH(2))·8H(2)O, was obtained by the reaction of pyridine-2,6-dicarboxylic acid (pydcH(2)) and propane-1,3-diamine (pn) in aqueous solution. Both neutral and monoanionic forms of the diacid are observed in the crystal structure. The negative charge of two monoanions is balanced by the dicationic propane-1,3-diaminium species. In addition, considerable ?-? stacking inter-actions between the aromatic rings of the (pydcH)(-) and (pydcH(2)) fragments [with centroid-centroid distances of 3.5108?(11)-3.5949?(11)?Å] are observed. The most important feature of this crystal structure is the presence of a large number of O-H?O, O-H?N, N-H?O, N-H?N, C-H?O and C-H?N hydrogen bonds, with D?A ranging from 2.445?(2) to 3.485?(3)?Å. These inter-actions as well as ion pairing and ?-? stacking connect the various fragments into a supra-molecular structure.

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2,2'-Bipyridine-5,5'-dicarboxylic acid.

Project description:The title mol-ecule, C(12)H(8)N(2)O(4), lies on an inversion center. In the crystal structure, inter-molecular O-H⋯O hydrogen bonds connect mol-ecules into one-dimensional chains along [11].

| S-EPMC2969984 | biostudies-literature

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