Crystal structure of aqua­tris­(isonicotinamide-κN)bis­(thio­cyanato-κN)cobalt(II) 2.5-hydrate

The asymmetric unit of the title compound, [Co(NCS)(2)(C(6)H(6)N(2)O)(3)(H(2)O)]·2.5H(2)O, comprises one Co(II) cation, three isonicotinamide ligands, two thio­cyanate anions, one aqua ligand and two water solvent mol­ecules in general positions, as well as one water solvent mol­ecule that is located on a twofold rotation axis. The Co(II) cations are octa­hedrally coordinated by two terminally N-bonded thio­cyanate anions, one water mol­ecule and three isonicotinamide ligands, each coordinating via the pyridine N atom. The discrete complexes are linked by inter­molecular O—H⋯O, N—H⋯O and N—H⋯S hydrogen bonding into a three-dimensional network that contains cavities in which the solvent water mol­ecules are located. The latter are linked by further O—H⋯O hydrogen bonds to the network. There are additional short contacts present in the crystal, indicative of weak C—H⋯S, C—H⋯O and C—H⋯N inter­actions.