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[Contents scheme]

Acta Cryst. (2013). E69, o159-o160
[ doi:10.1107/S1600536812051434 ]

2-Chlorobenzene-1,4-diaminium bis(dihydrogenphosphate)

M. L. Mrad, M. Zeller, M. Rzaigui and C. Ben Nasr

Abstract: The asymmetric unit of the title salt, C6H9ClN22+·2H2PO4-, contains two dihydrogenphosphate anions and one 2-chlorobenzene-1,4-diaminium dication. The H2PO4- anions are interconnected through strong O-H...O hydrogen bonds to form two-dimensional infinite layers parallel to (001). The organic entities are anchored to the inorganic layers through N-H...O hydrogen bonds, and through weak C-Cl...O halogen bonds [3.159 (2) Å, 140.48 (7)°]. No [pi]-[pi] stacking interactions between neighboring aromatic rings or C-H...[pi] interactions towards them are observed. Minor disorder is observed for the Cl atom and one hydroxy group [minor-component occupancy = 3.29 (9)%].

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