The average static electric field experienced by an ion, molecule or atom in a crystal generated by all the other surrounding atoms, molecules, or ions. The concept introduced by @B00624@ and developed by Bethe has been extended to refer to the field generated by the @L03518@ (anions or neutral species) surrounding a transition metal ion in a @C01329@ compound. With the understatement that some covalency may exist in the metal-ligand bond, it is often referred to as @LT06764@.
PAC, 1999, 71, 1919. (Glossary of terms used in theoretical organic chemistry) on page 1932 [Terms] [Paper]