If the bond length of CO bond in carbon monoxide is 1.128 mathringA, then what is the value of CO bond length in Fe(CO)5?

Question

If the bond length of CO bond in carbon monoxide is 1.128 mathringA, then what is the value of CO bond length in Fe(CO)5?  (A) 1.15 mathringA (B) 1.128 mathringA (C) 1.72 mathringA (D) 1.118 mathringA

Tardigrade Admin · Accepted Answer

In CO, bond order = 3. In metal carbonyls like Fe(CO)5, due to d π -p π back-bonding, bond order of CO decreases slightly therefore, bond length increases slightly

Q. If the bond length of $CO$ bond in carbon monoxide is $1.128 \overset{˚}{A},$ then what is the value of $CO$ bond length in $F e (CO)_{5} ?$

$1.15 \overset{˚}{A}$

$1.128 \overset{˚}{A}$

$1.72 \overset{˚}{A}$

$1.118 \overset{˚}{A}$

In $CO$ , bond order $= 3$ . In metal carbonyls like $F e (CO)_{5},$ due to $d π - p π$ back-bonding, bond order of $CO$ decreases slightly therefore, bond length increases slightly

Q. If the bond length of CO bond in carbon monoxide is 1.128A˚, then what is the value of CO bond length in Fe(CO)5​?

1.15A˚

1.128A˚

1.72A˚

1.118A˚