Coordination Compounds - Result Question 76
####83. Which of the following carbonyls will have the strongest $C-O$ bond ?
[2011 M]
(a) $[Mn(CO)_6]^{+}$
(b) $[Cr(CO)_6]$
(c) $[V(CO)_6]^{-}$
(d) $[Fe(CO)_5]$
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Solution:
- (a) As + ve charge on the central metal atom increases, the less readily the metal can donate electron density into the $\pi^{*}$ orbitals of $CO$ ligand to weaken the $C-O$ bond. Hence, the $C-O$ bond would be strongest in $[Mn(CO)_6]^{+}$.
