NEET2011ChemistryCoordination CompoundsActual
Which of the following carbonyls will have the strongest C - O bond?
Options
- AMn ( CO )₆⁺
- BCr ( CO )₆
- CV ( CO )₆⁻
- DFe ( CO )₅
Correct answer
A. Mn ( CO )₆⁺
Step-by-step solution
As positive charge on the central metal atom increases, the less readily the metal can donate electron density into the anti bonding -orbitals of CO ligand to weaken the C - O bond. Hence, the C - O bond would be strongest in Mn ( CO )₆⁺ .