The manner of interaction (termed according to the Greek 'to hold or clasp to oneself as a shield') of a coordinatively unsaturated metal atom with a ligand, when the metal atom draws the ligand towards itself. An important type of @A00187@ interaction is the C–H–Metal @C01329@ providing for the @A00093@ of the C–H bond in transition metal complexes.
PAC, 1999, 71, 1919. (Glossary of terms used in theoretical organic chemistry) on page 1922 [Terms] [Paper]