organic compounds
Open access
The asymmetric unit of the title compound, C9H9N2+·C4H3O4−·0.5C4H4O4, consists of one 2-phenylimidazolium cation, one hydrogen fumarate anion and half a fumaric acid molecule, which lies on an inversion center. N—HO and O—HO hydrogen bonds connect the cations, anions and fumaric acid molecules into sheets parallel to the (102) plane.
organic compounds
Open access
In the title structure, C25H24FN3O5, a strong intramolecular O—HO hydrogen bond is present between the carboxy group at the 3-position and the carbonyl group at the 4-position. In the crystal, molecules are held together by weak C—HO, C—HF and π–π [centroid–centroid distance 3.6080 (8) Å] interactions. The 1,4-dihydroquinoline ring and cyclopropyl group are not in the same plane, making an interplanar angle of 57.52 (8)°.