Hexa­kis­(μ₂-4-amino-3,5-dimethyl-4H-1,2,4-triazole)hexa­aqua­tricobalt(II) naphthalene-1,5-disulfonate tetra­chloride

In the centrosymmetric trinuclear cation of the title compound, [Co₃(C₄H₈N₄)₆(H₂O)₆](C₁₀H₆O₆S₂)Cl₄, the three Co^II atoms are bridged by six triazole mol­ecules via the N atoms in the 1,2-positions. The central Co^II atom, lying on an inversion center, is coordinated by six triazole N atoms while the terminal Co^II atoms are coordinated by three triazole N atoms and three water O atoms in a distorted octa­hedral geometry. The naphthalene­disulfonate anion is also centrosymmetric. The four chloride counter anions are half-occupied; the H atoms of the amino groups show an occupancy of 2/3. O—H...Cl, O—H...O and N—H...O hydrogen bonds link the complex cations and the chloride and naphthalene-1,5-disulfonate anions.