Chemistry - Coordination Chemistry Question with Solution | TestHub

The square planar complex of the type $[\mathrm{Mabcd}{]}^{\mathrm{n}\pm }$, where all four ligands are different, has 3 geometrical isomers. But if one of the ligands is ambidentate, then $2\times$ $3=6$ geometrical isomers are possible. But if two ligands are ambidentate, then $4\times 3=$ 12 geometrical isomers are possible. In the given example, ${\mathrm{NO}}_2^{-}$and ${\mathrm{SCN}}^{-}$are ambidentate ligands.