Spectator ligand

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In coordination chemistry, a spectator ligand is a ligand that does not participate in chemical reactions of the complex. Instead, spectator ligands (vs "actor ligands") occupy coordination sites. Spectator ligands tend to be of polydentate, such that the M-spectator ensemble is inert kinetically.

Excerpt from the Wikipedia article “Spectator ligand”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

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