title: Hexaaqua-manganese(II) tetra-aqua-bis(2-amino-pyrazine-κN)manganese(II) disulfate dihydrate.
abstract: The reaction of manganese(II) sulfate and 2-amino-pyrazine affords the title salt, [Mn(H(2)O)(6)][Mn(C(4)H(5)N(3))(2)(H(2)O)(4)](SO(4))(2)·2H(2)O. The metal atoms in the tetra-aqua-coordinated and hexa-aqua-coordinated cations lie on centers of inversion in octa-hedral geometries. The cations, anions and solvent water mol-ecules are linked by O-H⋯O, N-H⋯O and O-H⋯N hydrogen bonds into a three-dimensional network.
authors.forename: Li-Hua
authors.initials: LH
authors.lastname: Huo
authors.forename: Shan
authors.initials: S
authors.lastname: Gao
authors.forename: Seik Weng
authors.initials: SW
authors.lastname: Ng