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

Abstract

In the centrosymmetric trinuclear cation of the title compound, [Co3(C4H8N4)6(H2O)6](C10H6O6S2)Cl4, the three CoII atoms are bridged by six triazole molecules via the N atoms in the 1,2-positions. The central CoII atom, lying on an inversion center, is coordinated by six triazole N atoms while the terminal CoII 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.