organic compounds
Open access
In the title compound, C11H10INO3, an addition product of itaconic acid anhydride and 4-iodoaniline, the least-squares planes defined by the atoms of the aromatic moiety and the non-H atoms of the carboxylic acid group enclose an angle of 74.82 (11)°. In the crystal, classical O—HO hydrogen bonds formed by carboxylic groups, as well as N—HO hydrogen bonds formed by amide groups, are present along with C—HO contacts. Together, these connect the molecules into dimeric chains along the b-axis direction.
organic compounds
Open access
In the title compound, C12H14N3+·NO3−, the mononitrate of protonated bis(pyridin-2-ylmethyl)amine, the least-squares planes defined by the non-H atoms of the two aromatic moieties intersect at an angle of 7.91 (6)°. In the crystal, N—HN, N—HO and C—HN hydrogen bonds, as well as C—HO contacts, connect the entities into a three-dimensional network. The shortest centroid–centroid distance between two aromatic systems is 3.7255 (8) Å and is apparent between the two different aromatic moieties.