Acta Cryst. (2009). E65, m473-m474  [ doi:10.1107/S1600536809011106 ]

Acridinium (6-carboxypyridine-2-carboxylato)(pyridine-2,6-dicarboxylato)zincate(II) pentahydrate

M. Tabatabaee, H. Aghabozorg, J. Attar Gharamaleki and M. A. Sharif

Abstract: The reaction of Zn(NO₃)₂ with pyridine-2,6-dicarboxylic acid (pydcH₂) and acridine (acr) in aqueous solution leads to the formation of the title compound, (C₁₃H₁₀N)[Zn(C₇H₃NO₄)(C₇H₄NO₄)]·5H₂O or (acrH)[Zn(pydcH)(pydc)]·5H₂O. In the title compound, the Zn^II atom is coordinated by four O atoms and two N atoms from the tridentate chelating rings of (pydc)^2- and (pydcH)^- anions. The geometry of the resulting ZnN₂O₄ coordination can be described as distorted octahedral. To balance the charges, one protonated acridine (acrH)⁺ cation is present. In the crystal structure, extensive O-HO and N-HO hydrogen bonds involving acrH⁺, the complex anion and uncoordinated water molecules form a three-dimensional network.

Online 31 March 2009

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