title: 4-(4-Iodo-anilino)-2-methyl-ene-4-oxo-butanoic acid.
abstract: In the title compound, C11H10INO3, an addition product of itaconic acid anhydride and 4-iodo-aniline, the least-squares planes defined by the atoms of the aromatic moiety and the non-H atoms of the carb-oxy-lic acid group enclose an angle of 74.82 (11)°. In the crystal, classical O-H⋯O hydrogen bonds formed by carb-oxy-lic 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 mol-ecules into dimeric chains along the b-axis direction.
authors.affiliation: Mangalore University, Department of Studies in Chemistry, Mangalagangotri 574 199, India.
authors.forename: Prakash S
authors.initials: PS
authors.lastname: Nayak
authors.forename: Badiadka
authors.initials: B
authors.lastname: Narayana
authors.forename: Hemmige S
authors.initials: HS
authors.lastname: Yathirajan
authors.forename: Thomas
authors.initials: T
authors.lastname: Gerber
authors.forename: Benjamin
authors.initials: B
authors.lastname: van Brecht
authors.forename: Richard
authors.initials: R
authors.lastname: Betz