Acta Crystallographica Section C

Volume 65, Part 10 (October 2009)

organic compounds

fg3128 scheme

Acta Cryst. (2009). C65, o525-o528 [ doi:10.1107/S0108270109037500 ]

Hydrogen-bond-directed supramolecular arrays in 4,4'-bipyridinium tetrachloroterephthalate dihydrate and bis(1,10-phenanthrolinium) tetrachloroterephthalate tetrachloroterephthalic acid trihydrate

M.-Y. He, Z.-H. Zhang, L.-D. Lu, X.-J. Yang and X. Wang

Abstract: The title compounds, C₁₀H₁₀N₂²⁺·C₈Cl₄O₄^2-·2H₂O, (I), and 2C₁₂H₉N₂⁺·C₈Cl₄O₄^2-·C₈H₂Cl₄O₄·3H₂O, (II), both crystallize as charge-transfer organic salts with the dianionic or neutral acid components lying on inversion centres. The acid and base subunits in (I) arrange alternately to generate a linear tape motif via N-HO hydrogen bonds; these tapes are further combined into a three-dimensional architecture through multiple O-HO and C-HO interactions involving solvent water molecules. In contrast, the neutral and anionic acid components in (II) are linked to form a zigzag chain by means of O-HO hydrogen bonds between acid groups, with dangling 1,10-phenanthrolinium units connected to these chains by carboxylate-pyridinium interactions with R₂²(7) hydrogen-bond notation. Adjacent chains are further extended to result in a two-dimensional corrugated layer network via [pi] - [pi] interactions. Inter-ion ClO interactions are also found in both (I) and (II).

Formula: C₁₀H₁₀N₂²⁺·C₈Cl₄O₄^2-·2H₂O and 2C₁₂H₉N₂⁺·C₈Cl₄O₄^2-·C₈H₂Cl₄O₄·3H₂O


	Structure factor file (CIF format) (85.3 kbytes) [ doi:10.1107/S0108270109037500/fg3128Isup2.hkl ] Contains datablock I

	Structure factor file (CIF format) (180.3 kbytes) [ doi:10.1107/S0108270109037500/fg3128IIsup3.hkl ] Contains datablock II

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