Which of following is not an ambidentate ligand?

  • Option 1)

    NO_{2}^{-}

  • Option 2)

    CN^{-}

  • Option 3)

    SCN^{-}

  • Option 4)

    CO

 

Answers (1)
P Plabita

As we learnt in 

Types of Ligands on the basis of Connectivity -

(i) Unidentate - ligand is bound to metal ion through a single donor atom.

eg: Cl^{-}, H_{2}O and NH_{3}

(ii) Bidentate : when ligand can bind through two donor atoms

eg: CH_{2}NH_{2}-CH_{2}NH_{2}

(iii) Polydentate - when ligand bind to two or more donor atoms

(iv) Hexadentate - type of polydentate having six donor atoms

(v) Ambidentate- which can ligate through two different atoms at a time

eg. M\leftarrow SCN & M\leftarrow NCS

- wherein

All ambidentate ligands are monodentate but all monodentate ligands are not ambidentate

   

 

Ambidentate Ligands can ligate through two different atoms at a time. 

Of all the given, CO is the only ligand which can donate only through one atom i.e. C

 


Option 1)

NO_{2}^{-}

This option is incorrect

Option 2)

CN^{-}

This option is incorrect

Option 3)

SCN^{-}

This option is incorrect

Option 4)

CO

This option is correct

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