Abstract
A new proton‐transfer organic salt, quinolinium hydrogensquarate (C13H9NO4), has been synthesized and fully characterized by single crystal x‐ray diffraction. The salt crystallizes in the monoclinic space group P21/n with the parameters: a = 3.8290(12) Å, b = 20.960(6) Å, c = 13.802(4) Å, β = 95.452(5)°, V = 1102.7(6) Å3, Z = 4 formula units. The structure consists of uncommon supramolecular neutral dimers which pile up parallel to [100] forming infinite sheets. These centrosymmetric dimers are held together by lateral hydrogen‐bonds whereby two neighboring coplanar hydrogensquarate anions act as a bridge between two terminal quinolinium cations and C‐H…O bridgings interlink next neighboring sheets. The bulk structure of this salt is consolidated by weak π—π interactions within the sheets which are neatly ordered side‐by‐side relative to one another.
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