Abstract
The reaction of Co(NCS)(2) and 4-methyl-pyridine (C(6)H(7)N) in water leads to the formation of light-blue single crystals of the title compound, [Co(NCS)(2)(C(6)H(7)N)(2)(H(2)O)(2)]. The asymmetric unit consists of one Co(II) cation (site symmetry 1) as well as one thio-cyanate anion, one 4-methyl-pyridine coligand and one water mol-ecule in general positions to generate trans-CoN(4)O(2) octa-hedra. In the crystal, the complexes are linked by O-H⋯S hydrogen bonds into a layered network. Powder X-ray diffraction (PXRD) shows that a pure sample has been obtained. Upon heating, the title compound loses its water mol-ecules and transforms into Co(NCS)(2)(C(6)H(7)N)(2), which is already reported in the literature.