Received 25 June 2010
The asymmetric unit of the title compound, C12H14N22+·2C7H5O5-·1.5H2O, contains two 4,4'-ethylenedipyridinium cations, four gallate anions and three water molecules. In the 4,4'-ethylenedipyridinium cations, the dihedral angles between the pyridinium rings are 4.3 (3) and 18.6 (3)°. Extensive classical N-HO and O-HO hydrogen bonding and weak C-HO hydrogen bonding and C-H interactions are present in the crystal structure. - stacking is also observed, the centroid-centroid separations between the benzene and pyridine rings being 3.611 (3), 3.448 (3) and 3.536 (3) Å.
For related structures, see: Bebout & Pagola (2009); Li & Guo (2007); Okabe et al. (2001). For the biological activity of gallic acid (3,4,5-trihydroxybenzoic acid) and its derivatives, see: Fukumoto & Mazza (2000).
Data collection: COLLECT (Nonius, 2000); cell refinement: SCALEPACK (Otwinowski & Minor, 1997); data reduction: DENZO (Otwinowski & Minor, 1997) and SCALEPACK; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009); software used to prepare material for publication: PLATON.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: XU2790 ).
This work was financial supported by Yuanpei University, Taiwan.
Bebout, D. & Pagola, S. (2009). Acta Cryst. E65, o317-o318.
Fukumoto, L. R. & Mazza, G. J. (2000). J. Agric. Food Chem. 48, 3597-3604.
Li, Z.-H. & Guo, M.-L. (2007). Acta Cryst. E63, o1167-o1168.
Nonius (2000). COLLECT. Nonius BV, Delft, The Netherlands.
Okabe, N., Kyoyama, H. & Suzuki, M. (2001). Acta Cryst. E57, o764-o766.
Otwinowski, Z. & Minor, W. (1997). Methods in Enzymology, Vol. 276, Macromolecular Crystallography, Part A, edited by C. W. Carter Jr & R. M. Sweet, pp. 307-326. New York: Academic Press.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
Spek, A. L. (2009). Acta Cryst. D65, 148-155.