As thiocyanate is an ambidentate ligand (Figure 1) it can bond with metal ion in 4
possibilities: ionic, M-NCS, M-SCN or M-SCN-M (bridging).
(a)
(b)
Figure 1 (a) Resonance forms of the thiocyanate ion and (b) 3 Possibilities of metal
complexes.
The first 4 hr lab period consist of synthesizing a series of 3 metal-thiocyanate complexes
{M = Fe(II), Ni(II) and Co(II)}.(Table 1).The syntheses of metal-thiocyanate complexes can be
found in experimental section