title: Melaminium sulfate.
abstract: In the title compound, C(3)H(8)N(6) (2+)·SO(4) (2-), the melaminium cations and sulfate anions are inter-connected by N-H⋯N and N-H⋯O hydrogen bonds, forming a layer in the (101) plane. The layers are connected through multiple hydrogen bonds and π-π stacking inter-actions (centroid-centroid distance of about 3.4 Å).
authors.affiliation: Institute of Crystalline Materials, Shandong University, Jinan 250100, People's Republic of China.
authors.forename: Bao-Yong
authors.initials: BY
authors.lastname: Zhu
authors.forename: De-Liang
authors.initials: DL
authors.lastname: Cui
authors.forename: Hai-Peng
authors.initials: HP
authors.lastname: Jing