First slide

Crystal field theory

Question

For the complex, [Ti (H₂O)₆ ]³⁺ the value of crystal field spliting ( $∆_{0}$ ) is 243 kJ / mol. The crystal field stabilization energy (CFSE) in the complex (in kJ mol^-1) would be

Moderate

A

-145.8
B

-97.2
C

-291.6
D

-243

Solution

The value ${[Ti {(H_{2} O)}_{6}]}^{3 +}$
Electronic configuration of
$\begin{array}{l} {Ti}^{3 +} = d^{1} (t_{2 g}^{1} e_{g}^{0}) \\ CFSE = - 0 .4 \times 1 \times Δ_{0} \\ = - \frac{2}{5} \times 243 = - 97 .2 KJ / mol \end{array}$

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