Bis(2-amino-pyrazine-κN)tetra-aqua-cadmium(II) bis-(perchlorate)-2-amino-pyrazine (1/4).

In the title compound, [Cd(C(4)H(5)N(3))(2)(H(2)O)(4)](ClO(4))(2)·4C(4)H(5)N(3), the Cd(II) atom (site symmetry ) is coordinated by two N-heterocycles and four water mol-ecules, resulting in a distorted trans-CdN(2)O(4) octa-hedral geometry for the metal. In the crystal, the cation, anion and free N-heterocycle mol-ecules are linked by N-H⋯N, N-H⋯O, O-H⋯N and O-H⋯O hydrogen bonds, forming a three-dimensional network.