η (eta or hapto)

in inorganic nomenclature
https://doi.org/10.1351/goldbook.H01881
An affix giving a topological indication of the bonding between a π-electron ligand and the @C00930@ in a @C01330@. A right superscript numerical index indicates the number of ligating atoms in the π-electron system of the ligand which bind to the @C00930@. Examples:
  1. [Fe(CO)3(C4H6SO)], tricarbonyl(η2-dihydrothiophene 1-oxide-κO)iron.
  2. [Cr(CO)4(C4H6)], tetracarbonyl(η4-2-@M03881@-1,3-propanediyl)chromium.
Source:
Red Book, 3rd ed., p. 202 [Terms] [Book]
See also:
Blue Book, p. 465 [Terms] [Book]
PAC, 1994, 66, 1077. (Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1120 [Terms] [Paper]
Citation: 'η (eta or hapto)' in IUPAC Compendium of Chemical Terminology, 3rd ed. International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. https://doi.org/10.1351/goldbook.H01881 RIS BibTex EndNote
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Last revised: February 24, 2014