title: N,N'-Bis(phenyl-sulfon-yl)maleamide.
abstract: Mol-ecules of the title compound, C(16)H(14)N(2)O(6)S(2), show crystallographic inversion symmetry: there is one half-mol-ecule in the asymmetric unit. The structure exhibits both intramolecular and inter-molecular N-H⋯O hydrogen bonds.
authors.forename: B Thimme
authors.initials: BT
authors.lastname: Gowda
authors.forename: Sabine
authors.initials: S
authors.lastname: Foro
authors.forename: P A
authors.initials: PA
authors.lastname: Suchetan
authors.forename: Hartmut
authors.initials: H
authors.lastname: Fuess