Acta Cryst. (2008). E64, m743-m744  [ doi:10.1107/S1600536808011938 ]

Butane-1,4-diammonium bis(pyridine-2,6-dicarboxylato)cuprate(II) trihydrate

H. Aghabozorg, N. Firoozi, L. Roshan, J. Attar Gharamaleki and M. Ghadermazi

Abstract: In the title compound, (C₄H₁₄N₂)[Cu(C₇H₃NO₄)₂]·3H₂O or (bdaH₂)[Cu(pydc)₂]·3H₂O (where bda is butane-1,4-diamine and pydcH₂ is pyridine-2,6-dicarboxylic acid), the Cu^II atom is coordinated by four O atoms [Cu-O = 2.0557 (16)-2.3194 (16) Å] and two N atoms [Cu-N = 1.9185 (18) and 1.9638 (18) Å] from two chelating rings of the pydc^2- anions, which act as tridentate ligands. The geometry of the resulting CuN₂O₄ coordination can be described as distorted octahedral. The the two pydc^2- fragments are almost perpendicular to one another [77.51 (11)°]. To balance the charges, two centrosymmetric protonated butane-1,4-diammonium, (bdaH₂)²⁺ cations are present. In the crystal structure, extensive O-HO, N-HO and C-HO hydrogen bonds [DA = 2.720 (2)-3.446 (3) Å], ion pairing, C-O [O = 3.099 (2) Å] and - stacking interactions between the pydc^2- rings [centroid-centroid distance = 3.5334 (15) Å] contribute to the formation of a three-dimensional supramolecular structure.

Online 30 April 2008

Copyright © International Union of Crystallography
IUCr Webmaster