The type of structural isomerism arises when a particular ligand is capable of coordinating to a metal in two ways is linkage isomer.
Structural isomerism is a kind of isomerism in which molecular formula of the compound is same but they all have different arrangement of atoms or bonding in them.
If in any compound particular ligand is attached to the metal through different sides of the compound, then the product which is formed by these arrangement is known as linkage isomers.
Example of the linkage isomer is attached below.
Hence, the required isomerism is linkage isomerism.
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