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Type of isomerism which exists between [...

Type of isomerism which exists between [Pd(`C_6H_5)_2``(SCN)_2]` and `[Pd(C_6H_5)_2(NCS)_2]` is

A

Linkage isomerism

B

coordination isomerism

C

ionisation isomerism

D

solvate isomerism

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The correct Answer is:
To determine the type of isomerism that exists between the two coordination compounds [Pd(C₆H₅)₂(SCN)₂] and [Pd(C₆H₅)₂(NCS)₂], we need to analyze the ligands involved and how they are bonded to the central metal atom, which in this case is palladium (Pd). ### Step-by-Step Solution: 1. **Identify the Ligands**: - In the first compound, [Pd(C₆H₅)₂(SCN)₂], the ligands are thiocyanate (SCN) ions. - In the second compound, [Pd(C₆H₅)₂(NCS)₂], the ligands are also thiocyanate ions, but they are bonded differently. 2. **Understand Ambidentate Ligands**: - The thiocyanate ion (SCN⁻) is an ambidentate ligand, meaning it can bind to the metal through either the sulfur (S) atom or the nitrogen (N) atom. - In [Pd(C₆H₅)₂(SCN)₂], the SCN ligands are coordinating through the sulfur atom. - In [Pd(C₆H₅)₂(NCS)₂], the NCS ligands are coordinating through the nitrogen atom. 3. **Determine the Type of Isomerism**: - Since the two compounds differ only in the way the thiocyanate ligands are attached to the palladium center (one through sulfur and the other through nitrogen), this is a classic case of **linkage isomerism**. - Linkage isomerism occurs when a ligand can coordinate to the metal in more than one way, leading to different isomers. 4. **Conclusion**: - The type of isomerism that exists between [Pd(C₆H₅)₂(SCN)₂] and [Pd(C₆H₅)₂(NCS)₂] is **linkage isomerism**. ### Final Answer: The type of isomerism is **linkage isomerism**.
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