First slide

Structural isomerism

Question

Which one of the following complex exhibits linkage isomerism ?

Easy

A

$[Cr {(H_{2} O)}_{4} {Cl}_{2}] Cl$
B

$[Co {({NH}_{3})}_{5} (ONO)] {SO}_{4}$
C

$[Pt {({NH}_{3})}_{4} {Cl}_{2}] {Br}_{2}$
D

$[Cr {(en)}_{2} {Cl}_{2}] Cl$

Solution

Complexes containing ambidentate ligands exhibit linkage isomerism.
${NO}_{2}^{-}, {ONO}^{-}, {SCN}^{-}, {NCS}^{-}, {CN}^{-}, {NC}^{-}$ are some important ambidentate ligands.
$∴ [Co {({NH}_{3})}_{5} (ONO)] {SO}_{4} and [Co {({NH}_{3})}_{5} ({NO}_{2})] {SO}_{4}$ are linkage isomers.

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