Acta Cryst. (2009). E65, m1503  [ doi:10.1107/S1600536809045310 ]

Hexaaquacobalt(II) tetraaquabis(2-aminopyrazine-N⁴)cobalt(II) disulfate dihydrate

W. Kang, L.-H. Huo, S. Gao and S. W. Ng

Abstract: The reaction of cobalt(II) sulfate and 2-aminopyrazine affords the title salt, [Co(H₂O)₆][Co(C₄H₅N₃)₂(H₂O)₄](SO₄)₂·2H₂O. The metal atoms in the tetraaqua-coordinated and hexaaqua-coordinated complex cations lie on centers of inversion in slightly distorted octahedral geometries. The cations, anions and solvent water molecules are linked by O-HO, O-HN and N-HO hydrogen bonds into a three-dimensional network.

Online 4 November 2009

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