4-(4-Iodoanilino)-2-methylene-4-oxobutanoic acid

Abstract

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—H...O hydrogen bonds formed by carboxylic groups, as well as N—H...O hydrogen bonds formed by amide groups, are present along with C—H...O contacts. Together, these connect the molecules into dimeric chains along the b-axis direction.