question_answer

Which of the following represents hexadentate ligand?

A) 2, 2-bipyridyl   

B)        DMG    

C)        Ethylenediamine

D)       None of these

Correct Answer: D

Solution :

Key Idea:  Hexadentate ligand donates 6 pair of electrons to central atom. (a) 2, 2-dipyridyl-bidentate ligand (b) DMG- bidentate ligand \[\begin{align}   & C{{H}_{3}}-C=N-O\xrightarrow{{}} \\  & C{{H}_{3}}-\overset{|}{\mathop{C}}\,=\underset{OH}{\mathop{\underset{|}{\mathop{N}}\,}}\,\xrightarrow{{}} \\ \end{align}\] (c) Ethylenediamine- pentadentate ligand \[\therefore \]  None of the given ligand is hexadentate ligand.