Reactions without Metal-Ligand Atom Bond Cleavage

Reactions without Metal-Ligand Atom Bond Cleavage 

The substitution reactions discussed thus far have been of the type that involve M-L bond cleavage. Most ligand-replacement reactions are of this type. Yet many examples are known where one ligand is transformed to a different ligand without the rupture of the M-L bond. No doubt the 

It is also believed that the hydrolytic oxidation of coordinated NCS in certain Co (III) complexes reported by Werner several years ago does not involve Co-N bond cleavage, Eq. (68). The same is perhaps true for the reduction of the coordinated N02 in reaction (69). 

Had the Co-0 bond broken, then the aquo complex would contain solvent water with its high oxygen-18 content. 

Another example that has been studied in some detail is the formation of nitrito (M—ONO) complexes. In this connection it is of interest to stress the fact that at times what appears to be a simple reaction from its over-all stoichiometry may instead be rather complicated. The simple  

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D. Reactions without Metal-Ligand Atom Bond Cleavage... 

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