Coordination Compounds - Result Question 76

####83. Which of the following carbonyls will have the strongest CO bond ?

[2011 M]

(a) [Mn(CO)6]+

(b) [Cr(CO)6]

(c) [V(CO)6]

(d) [Fe(CO)5]

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Solution:

  1. (a) As + ve charge on the central metal atom increases, the less readily the metal can donate electron density into the π orbitals of CO ligand to weaken the CO bond. Hence, the CO bond would be strongest in [Mn(CO)6]+.


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