Crystal structures of (aceto­nitrile-κN)tris­(pyridine-4-thio­amide-κN)bis­(thio­cyanate-κN)cobalt(II) aceto­nitrile disolvate and tetra­kis­(pyridine-4-thio­amide-κN)bis­(thio­cyanate-κN)nickel(II) methanol penta­solvate

Reaction of Co(NCS)(2) or Ni(NCS)(2) with pyridine-4-thio­amide in different solvents led to the formation of two compounds with composition [Co(NCS)(2)(C(2)H(3)N)(C(6)H(6)N(2)S)(3)]·2CH(3)CN (1) and [Ni(NCS)(2)(C(6)H(6)N(2)S)(4)]·5CH(3)OH (2), respectively. The asymmetric unit of compound 1 consists of one cobalt(II) cation, two thio­cyanate anions, three pyridine-4-thio­amide ligands, one coordinating and two solvate aceto­nitrile mol­ecules. One of the two aceto­nitrile solvate mol­ecules is disordered over two sets of sites in a 0.62:0.38 ratio. The asymmetric unit of compound 2 comprises of one nickel(II) cation, two thio­cyanate anions, four N-bonding pyridine-4-thio­amide ligands and five methanol solvate mol­ecules. In compound 1, the cobalt(II) cations are octa­hedrally coordinated into discrete complexes by two terminal N-bonding thio­cyanate anions, the N atoms of three pyridine-4-thio­amide ligands and one aceto­nitrile mol­ecule. Additional aceto­nitrile solvate mol­ecules are located between the complexes,. The complexes and solvate mol­ecules are linked via inter­molecular hydrogen bonding into a three-dimensional framework. In compound 2, the nickel(II) cations are likewise octa­hedrally coordinated by two terminal N-bonded thio­cyanate anions and four N-bonding pyridine-4-thio­amide ligands into discrete complexes. From their arrangement cavities are formed, in which the methanol solvate mol­ecules are located. Again, the complexes and solvate mol­ecules are linked into a three-dimensional framework by inter­molecular hydrogen bonding.