First slide

Terms used in complex chemistry

Question

All the following are ambidentate ligands except

Easy

A

${ONO}^{-}$
B

${SCN}^{-}$
C

$C_{2} O_{4}^{- 2}$
D

${CN}^{-}$

Solution

$A) {NO}_{2}^{-}, {ONO}^{-}; B) {CN}^{-}, {NC}^{-}; C) {SCN}^{-}, {NCS}^{-}; These are ambidentate ligands; But oxalato is not a ambidentate ligand; A ligand which contains two donar atoms but at a time only one atom donates is an ambidentate ligand; In oxalato, both oxygen atoms can donate simultaneously;$

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