Question:
If the bond length of CO bond in carbon monoxide is $1.128 \mathring{A}, $ then what is the value of CO bond length in $Fe(CO)_5? $
If the bond length of CO bond in carbon monoxide is $1.128 \mathring{A}, $ then what is the value of CO bond length in $Fe(CO)_5? $
Updated On: Jun 14, 2022
- $1.15 \mathring{A}$
- $1.128 \mathring{A}$
- $1.72 \mathring{A}$
- $1.118 \mathring{A}$
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The Correct Option is A
Solution and Explanation
In CO, bond order = 3. In metal carbonyls like $Fe(CO)_5, $ due to $d \pi -p \pi $ back-bonding, bond order of CO decreases slightly therefore, bond length increases slightly
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Concepts Used:
Coordination Compounds
A coordination compound holds a central metal atom or ion surrounded by various oppositely charged ions or neutral molecules. These molecules or ions are re-bonded to the metal atom or ion by a coordinate bond.
Coordination entity:
A coordination entity composes of a central metal atom or ion bonded to a fixed number of ions or molecules.
Ligands:
A molecule, ion, or group which is bonded to the metal atom or ion in a complex or coordination compound by a coordinate bond is commonly called a ligand. It may be either neutral, positively, or negatively charged.