Acta Crystallographica Section C

Volume 65, Part 11 (November 2009)

organic compounds

su3040 scheme

Acta Cryst. (2009). C65, o569-o573 [ doi:10.1107/S0108270109040761 ]

1:1 Adducts of 2,2'-[isopropylidenebis(p-phenyleneoxy)]diacetic acid with dimethylammonium and 4,4'-bipyridine

Z.-B. Zheng, X. Zhao, J.-K. Li, Y.-F. Han and N.-N. Ji

Abstract: The title compounds, dimethylammonium 2-{4-[1-(4-carboxymethoxyphenyl)-1-methylethyl]phenoxy}acetate, C₂H₈N⁺·C₁₉H₁₉O₆^-, (I), and 2,2'-[isopropylidenebis(p-phenyleneoxy)]diacetic acid-4,4'-bipyridine (1/1), C₁₉H₂₀O₆·C₁₀H₈N₂, (II), are 1:1 adducts of 2,2'-[isopropylidenebis(p-phenyleneoxy)]diacetic acid (H₂L) with dimethylammonium or 4,4'-bipyridine. The component ions in (I) are linked by N-HO, O-HO and C-HO hydrogen bonds into continuous two-dimensional layers parallel to the (001) plane. Adjacent layers are stacked via C-HO hydrogen bonds into a three-dimensional network with an -ABAB- alternation of the two-dimensional layers. In (II), two H₂L molecules, one bipy molecule and two half bipy molecules are linked by O-HN hydrogen bonds into one-dimensional chains and rectanglar-shaped rings. They are assembled via [pi] - [pi] stacking interactions and C-HO hydrogen bonds into an intriguing zero-dimensional plus one-dimensional poly(pseudo)rotaxane motif.

Formula: C₂H₈N⁺·C₁₉H₁₉O₆^- and C₁₉H₂₀O₆·C₁₀H₈N₂


	Structure factor file (CIF format) (181.1 kbytes) [ doi:10.1107/S0108270109040761/su3040Isup2.hkl ] Contains datablock I

	Structure factor file (CIF format) (437.7 kbytes) [ doi:10.1107/S0108270109040761/su3040IIsup3.hkl ] Contains datablock II

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