Coordination Compounds Ques 65
$CN^{-}$ is a strong field ligand. This is due to the fact that
[2004]
(a) it carries negative charge
(b) it is a pseudohalide
(c) it can accept electrons from metal species
(d) it forms high spin complexes with metal species
Show Answer
Solution:
$CN^{-}$is a strong field ligand as it is a pseudohalide ion.
Psuedohalide ions are strong coordinating ligands and hence have the tendency to form $\sigma$-bond (from the pseudo halide to the metal) and $\pi$-bond (from the metal to the pseudo halide).
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