Question

Construct a complete molecular orbital diagram for a d 4 octahedral complex. Consider -bonding only. Sketch topologically correct ligand group orbitals and atomic orbitals and place MO’s in correct order according to energy. Label appropriately and fill with the correct number of electrons.

Answer 1

In a molecule of the d⁴ octahedral complex is in the form [ML₆]n

d⁴ octahedral structure can be two types one is high-spin complex and low-spin copmlex.

Especially the Mn³⁺ shows the d⁴ octahedral complex.which has five degenerate d orbitals

This is the coordinate bonded molecules where the transition metals ion at center and it is attacked by 6 ligands.

the five d orbitals into sets of different energy by Crystal field split energy and it is denoted . In otherword , in an octahedral state for each electron entering into the orbitals, the CFSE is -4dq and +6dq respectively.

The molecular orbital diagram for the Mn³⁺ and the general structure for d⁴ octahedral complex(hign spin field that means P>10dq)