Question

Most organometallic complexes adhere to the 18 electron rule. Typically, solutions for organometallic complexes are colorless while solutions of classical inorganic complexes are light in color. Using molecular orbital diagrams, explain why the difference between these two types of compounds occur.

Answer 1

Solution :-

Given that,

It is clearly depends on the metal's electrons and also about theirs d-orbitals.

Transition elements are usually characterised by having d-orbitals. If metal is not bonded with any other complex, these d-orbitals are degenerate. Then they are having same energy levels.

When the metal starts bonding with other ligands this phenomenon changed totally. due to the different symmetries of the d -orbitals.Due to the different symmetries of the d - orbitals and the inductive effected of the ligands on the electrons The d-orbitals split apart and it will become non-degenerative, which means having different energy levels.