Question
What is coordination isomerism? Explain.
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Answer
Coordination isomerism : This isomerism occurs when there is an interchange of ligands between the cationic and anionic coordination powers of different metals present. Complex $\left[ Co \left( NH _3\right)_6\right]\left[ Cr ( CN )_6\right]$ in which $NH _3$ is bonded to $Co ^{2+}$ and $CN ^{-}$
$CN ^{-}$is bonded to $Cr ^{3+}$ whereas in its coordination isomer $\left[ Cr \left( NH _3\right)_6\right]\left[ Co \left( CN _6\right)\right], NH _3$ is bonded to $Cr ^{3+}$ and $CN ^{-}$is bonded to $Co ^{3+}$.
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