Question

Mention substitution reacrion which undergoes without cleavage of metal ligand

Answer 1

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Oxidation and reduction of ligands owing to an interaction with their central atom have been reviewed. These reactions were divided into two major groups:

(a) Reactions in which the interaction between a ligand and a central atom results in the formation of an unstable complex which undergoes a monomolecular change in the oxidation state of the central atom, yielding a modified ligand.

(b) Cases in which a stable metal-ligand system undergoes a change in the oxidation state of the metal atom on interaction with another reagent. This is followed by an interaction between the metal atom and its ligand. As a result of this process the metal ion may be recovered either in its initial or in a different stable state of oxidation.