Question

For the coordination compound on the basis of crystal field theory, write the electronic configuration for d\(^4\) ion if \(\Delta_o\) < P. Is the coordination compound a high spin or low spin complex?

Hint:

- In high spin complexes, the electrons prefer to occupy higher energy orbitals to minimize pairing. - Low spin complexes occur when \(\Delta_o\)>P, leading to pairing of electrons.

Answer 1

For a d\(^4\) ion with \(\Delta_o\) < P, the electronic configuration is \(t_{2g}^3 e_g^1\), which corresponds to a high spin complex. This is because the pairing energy is higher than the crystal field splitting energy, causing electrons to occupy higher energy orbitals rather than pair up.