Synthesis, crystal structure and thermal properties of poly[bis­[μ2-3-(amino­meth­yl)pyridine]­bis­(thio­cyanato)­cobalt(II)]

The reaction of Co(NCS)2 with 3-(amino­meth­yl)pyridine as coligand leads to the formation of crystals of the title compound, [Co(NCS)2(C6H8N2)2]n, that were characterized by single-crystal X-ray analysis. In the crystal structure, the CoII cations are octa­hedrally coordinated by two terminal N-bonded thio­cyanate anions as well as two pyridine and two amino N atoms of four symmetry-equivalent 3-(amino­meth­yl)pyridine coligands with all pairs of equivalent atoms in a trans position. The CoII cations are linked by the 3-(amino­meth­yl)pyridine coligands into layers parallel to the ac plane. These layers are further linked by inter­molecular N—H⋯S hydrogen bonding into a three-dimensional network. The purity of the title compound was determined by X-ray powder diffraction and its thermal behavior was investigated by differential scanning calorimetry and thermogravimetry.