title: Bis(2-amino-4-methyl-pyrimidin-1-ium) hexa-aqua-cobalt(II) disulfate dihydrate.
abstract: In the title hydrated mixed-cation salt, (C(5)H(8)N(3))(2)[Co(H(2)O)(6)](SO(4))(2)·2H(2)O, the complete octa-hedral hexa-aqua complex cation is generated by crystallographic inversion symmetry. In the crystal, the components are linked by O-H⋯O and N-H⋯O hydrogen bonds, the latter, involving pyrimidinium cations and sulfate anions, generating R(2) (2)(8) loops. These, together with π-π inter-actions between centrosymmetrically related pyrimidinium cations [centroid-centroid separation = 3.5460 (8) Å], lead to the formation of a three-dimensional network.
authors: Department of Chemistry, Ferdowsi University of Mashhad, 917751436 Mashhad,  Iran.
authors: M
authors: M
authors: Mirzaei
authors: H
authors: H
authors: Eshtiagh-Hosseini
authors: S
authors: S
authors: Zarghami
authors: Z
authors: Z
authors: Karrabi
authors: M
authors: M
authors: Saeedi
authors: J T
authors: JT
authors: Mague