organic compounds
Open access
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—HO hydrogen bonds to form two-dimensional infinite layers parallel to (001). The organic entities are anchored to the inorganic layers through N—HO hydrogen bonds, and through weak C—ClO halogen bonds [3.159 (2) Å, 140.48 (7)°]. No π–π stacking interactions between neighboring aromatic rings or C—Hπ interactions towards them are observed. Minor disorder is observed for the Cl atom and one hydroxy group [minor-component occupancy = 3.29 (9)%].
organic compounds
Open access
In the title compound, 2C8H12NO+·H2P2O72−, the linked PO4 groups of the diphosphate anion are almost eclipsed and the P—O—P angle is 134.45 (7)°. In the crystal, infinite ribbons of H2P2O72− anions propagate in [100], being linked by strong O—HO hydrogen bonds. The 4-methoxybenzylammonium cations bond to the diphosphate chains by N—HO and C—HO links, and are themselves linked by C—Hπ interactions.