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 agostic
interaction is the C–H–Metal coordination
providing for the activation
of the C–H bond in transition metal complexes.
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. doi:10.1351/goldbook