Question

crystal field theory in short?

Answer 1

referred from Google :



Crystal Field Theory (CFT) is a model that describes the breaking of degeneracies of electron orbital states, usually d or f orbitals, due to a static electric field produced by a surrounding charge distribution (anion neighbors). This theory has been used to describe various spectroscopies of transition metal coordination complexes, in particular optical spectra (colors). CFT successfully accounts for some magnetic properties, colours, hydration enthalpies, and spinel structures of transition metal complexes, but it does not attempt to describe bonding. CFT was developed by physicists Hans Bethe and John Hasbrouck van Vleck[1] in the 1930s. CFT was subsequently combined with molecular orbital theory to form the more realistic and complex ligand field theory (LFT), which delivers insight into the process of chemical bonding in transition metal complexes.

Answer 2

Hey dear,

● Crystal field theory (CFT) -
- It describes the breaking of orbital degeneracy in transition metal complexes due to the presence of ligands.

● Salient features of CFT -
- Metal ion and ligands are considered point charges.
- These interact by ionic (electrostatic) bonding.
- Ligands can be either negative point charges or neutral dipoles.
- Central metal ion is surrounded by ligands with 1/more lone pairs of electrons.
- There is no orbital overlap between metal ion and ligand.

Hope this helps you...