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catena-Poly[[triaqua-cadmium(II)]-μ-pyridine-2,3-dicarboxyl-ato-κN,O:O].

Aghabozorg H, Motyeian E, Khadivi R, Ghadermazi M, Manteghi F - Acta Crystallogr Sect E Struct Rep Online (2008)

Bottom Line: The three remaining coordination sites on the metal center are occupied by water mol-ecules.The geometric arrangement of the six donor atoms around the Cd(II) atom is distorted octa-hedral.In the crystal structure, O-H⋯O and C-H⋯O hydrogen bonds play an important role in stabilizing the supra-molecular structure.

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ABSTRACT
The title polymeric compound, [Cd(C(7)H(3)NO(4))(H(2)O)(3)](n) or [Cd(py-2,3-dc)(H(2)O)(3)](n), where py-2,3-dcH(2) is pyridine-2,3-dicarboxylic acid, was obtained by the reaction of cadmium(II) nitrate hexa-hydrate with (pipzH(2))(py-2,3-dc) as a proton-transfer compound in aqueous solution (pipz is piperazine). The mol-ecular structure shows that only the anionic fragment of the starting proton-transfer compound is present in the complex, while the (pipzH(2))(2+) dication has been lost. Each (py-2,3-dc)(2-) ligand bridges two Cd(II) atoms in two different coordination modes, i.e. one end acts as a monodentate and the other end as a bidentate ligand. The three remaining coordination sites on the metal center are occupied by water mol-ecules. The geometric arrangement of the six donor atoms around the Cd(II) atom is distorted octa-hedral. In the crystal structure, O-H⋯O and C-H⋯O hydrogen bonds play an important role in stabilizing the supra-molecular structure.

No MeSH data available.


A view along the b axis of the crystal packing of the title compound [the hydrogen bonds are shown as dashed lines and the hydrogen atoms of the pyridine-2,3-dicarboxylates ligands are omitted for clarity].
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Fap3: A view along the b axis of the crystal packing of the title compound [the hydrogen bonds are shown as dashed lines and the hydrogen atoms of the pyridine-2,3-dicarboxylates ligands are omitted for clarity].


catena-Poly[[triaqua-cadmium(II)]-μ-pyridine-2,3-dicarboxyl-ato-κN,O:O].

Aghabozorg H, Motyeian E, Khadivi R, Ghadermazi M, Manteghi F - Acta Crystallogr Sect E Struct Rep Online (2008)

A view along the b axis of the crystal packing of the title compound [the hydrogen bonds are shown as dashed lines and the hydrogen atoms of the pyridine-2,3-dicarboxylates ligands are omitted for clarity].
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2960211&req=5

Fap3: A view along the b axis of the crystal packing of the title compound [the hydrogen bonds are shown as dashed lines and the hydrogen atoms of the pyridine-2,3-dicarboxylates ligands are omitted for clarity].
Bottom Line: The three remaining coordination sites on the metal center are occupied by water mol-ecules.The geometric arrangement of the six donor atoms around the Cd(II) atom is distorted octa-hedral.In the crystal structure, O-H⋯O and C-H⋯O hydrogen bonds play an important role in stabilizing the supra-molecular structure.

View Article: PubMed Central - HTML - PubMed

ABSTRACT
The title polymeric compound, [Cd(C(7)H(3)NO(4))(H(2)O)(3)](n) or [Cd(py-2,3-dc)(H(2)O)(3)](n), where py-2,3-dcH(2) is pyridine-2,3-dicarboxylic acid, was obtained by the reaction of cadmium(II) nitrate hexa-hydrate with (pipzH(2))(py-2,3-dc) as a proton-transfer compound in aqueous solution (pipz is piperazine). The mol-ecular structure shows that only the anionic fragment of the starting proton-transfer compound is present in the complex, while the (pipzH(2))(2+) dication has been lost. Each (py-2,3-dc)(2-) ligand bridges two Cd(II) atoms in two different coordination modes, i.e. one end acts as a monodentate and the other end as a bidentate ligand. The three remaining coordination sites on the metal center are occupied by water mol-ecules. The geometric arrangement of the six donor atoms around the Cd(II) atom is distorted octa-hedral. In the crystal structure, O-H⋯O and C-H⋯O hydrogen bonds play an important role in stabilizing the supra-molecular structure.

No MeSH data available.