title: Cytosinium-hydrogen maleate-cytosine (1/1/1).
abstract: The title organic salt, C(4)H(6)N(3)O(+)·C(4)H(3)O(4) (-)·C(4)H(5)N(3)O, was synthesized from cytosine base and maleic acid. An intra-molecular O-H⋯O hydrogen bond occurs in the hydrogen maleate anion. The crystal packing is stabilized by inter-molecular N-H⋯O, N-H⋯N and C-H⋯O hydrogen bonds, giving rise to a nearly planar two-dimensional network parallel to (101).
authors.forename: Nourredine
authors.initials: N
authors.lastname: Benali-Cherif
authors.forename: Wahiba
authors.initials: W
authors.lastname: Falek
authors.forename: Amani
authors.initials: A
authors.lastname: Direm