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Isomerism in ComplexesCoordination Compounds

If a complex of type [M(AA)2X2]n+[M(AA)_2X_2]^{n+} is optically active, which geometrical isomer must it be?

Expert Answer

Cis-isomer. The trans-isomer has a plane of symmetry and is optically inactive (meso), whereas the cis-isomer lacks symmetry and is chiral.

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