Which of the following is not an ambidentate ligand?
Which of the following is not an ambidentate ligand?
$\mathrm{C}_2 \mathrm{O}_4^{2-}$
$\mathrm{SCN}^{-}$
$\mathrm{NO}_2^{-}$
$\mathrm{CN}^{-}$
Solution
Ambidentate ligands are those ligands which have two different donor atoms and either of two donor atom is attached to the metal during complex formation.
(1) $\mathrm{COO}^{-} \rightarrow \mathrm{M}$ has only one donor site through ' O '. So, it is not ambidentate.
(2) $\mathrm{SCN} \rightarrow \mathrm{M}$
$\mathrm{NCS} \rightarrow \mathrm{M}$
(Ambidentate)
