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1 Coordination Compounds

Among the following, which are ambidentate ligands?
(i) SCN⁻
(ii) $$NO^-_3$$
(iii) $$NO^-_2$$
(iv) $$C_2O^{2-}_4$$

1) (i) and (iii)
2) (i) and (iv)
3) (ii) and (iii)
4) (ii) and (iv)

Option 1 Solution:

Solution

Ambidentate ligand has two or more donor atoms, but during complex formation, only one donor atom is attached to central metal. SCN− ion has donor atoms N and S. It links to metal as either M−SCN or M−NCS. NO₂⁻ group has donor atoms N and O. It links to metal as either M−ONO or M−NO2.

Option 2

Option 3

Option 4

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