Abstract
In the title compound, C6H7ClN+·C4H3O4 −, the cations and anions lie on mirror planes and hence only half of the molecules are present in the asymmeric unit. The 4-chloroanilinium cation and hydrogen maleate anion in the asymmetric unit are each planar and are oriented at an angle of 15.6 (1)° to one another and perpendicular to the b axis. A characterestic intramolecular O—H⋯O hydrogen bond, forming an S(7) motif, is observed in the maleate anion. In the crystal, the cations and anions are linked by N—H⋯O hydrogen bonds, forming layers in the ab plane. The aromatic rings of the cations are sandwiched between hydrogen-bonded chains and rings formed through the amine group of the cation and maleate anions, leading to alternate hydrophobic (z = 0 or 1) and hydrophilic layers (z = 1/2) along the c axis.
Highlights
C6H7ClN+C4H3O4, the cations and anions lie on mirror planes and only half of the molecules are present in the asymmeric unit
The aromatic rings of the cations are sandwiched between hydrogen-bonded chains and rings formed through the amine group of the cation and maleate anions, leading to alternate hydrophobic
Symmetry codes: (ii) x, −y+3/2, z; (iii) x−1, −y+1/2, z; (iv) x−1, y, z
Summary
Experimental a Department of Physics, Anna University of Technology Tirunelveli, Tirunelveli. 627 007, India, bDepartment of Physics, University College of Engineering Nagercoil, Anna University of Technology Tirunelveli, Nagercoil 629 004, India, and c. The 4-chloroanilinium cation and hydrogen maleate anion in the asymmetric unit are each planar and are oriented at an angle of 15.6 (1) to one another and perpendicular to the b axis. A characterestic intramolecular O—H O hydrogen bond, forming an S(7) motif, is observed in the maleate anion. The cations and anions are linked by N—H O hydrogen bonds, forming layers in the ab plane. The aromatic rings of the cations are sandwiched between hydrogen-bonded chains and rings formed through the amine group of the cation and maleate anions, leading to alternate hydrophobic
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