Question

What do you understand by inner orbital complex?

What are low-spin complexes?

Answer 1

The complexes involving d²sp³ hybridisation are referred to as inner orbital complexes. This is due to the fact that the hybridisation process necessitates the involvement of inner d-orbitals, specifically the (n - l)d-orbitals of the central metal atom or ion, in the formation of these complexes. Typically, these complexes have a reduced number of unpaired electrons. Consequently, they are also referred to as spin-paired complexes or low-spin complexes.