The CFSE for [.CoCl6].4 - complex is 18000 cm- 1 . The Δ for [.CoCl4].2 - will be

Question

The CFSE for [.CoCl6].4 - complex is 18000 cm- 1 . The Δ for [.CoCl4].2 - will be (A) 9000 text c textm- 1 (B) 4000 text c textm- 1 (C) 8000 text c textm- 1 (D) 2000 text c textm- 1

Tardigrade Admin · Accepted Answer

The relation of CFSE for tetrahedral and octahedral complex is given as Δ t=(4/9)Δ 0 So Δ t for [.CoCl4].2 -=(4/9)× 18000 textc textm- 1 =8000 text c textm- 1 .

Q. The CFSE for $[C o C l_{6}]^{4 -}$ complex is 18000 $c m^{- 1}$ . The $Δ$ for $[C o C l_{4}]^{2 -}$ will be

$9000 c m^{- 1}$

$4000 c m^{- 1}$

$8000 c m^{- 1}$

$2000 c m^{- 1}$

The relation of CFSE for tetrahedral and octahedral complex is given as

$Δ_{t} = \frac{4}{9} Δ_{0}$

So $Δ_{t}$ for $[C o C l_{4}]^{2 -} = \frac{4}{9} \times 18000 c m^{- 1}$

$= 8000 c m^{- 1}$ .

Q. The CFSE for [CoCl6​]4− complex is 18000 cm−1 . The Δ for [CoCl4​]2− will be

9000 cm−1

4000 cm−1

8000 cm−1

2000 cm−1