Find out the number of geometrical isomer(s) possible for the complex [Co(NH3)3(NO2)3].
Question
Find out the number of geometrical isomer(s) possible for the complex [Co(NH3)3(NO2)3]
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Solution
The complex [Co(NH3)3(NO2)3] is an octahedral complex. In octahedral complexes, geometrical isomers are possible when there are at least two different types of ligands.
In this complex, there are two types of ligands: NH3 and NO2.
The possible geometrical isomers for this complex are:
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Facial (fac) isomer: In this isomer, three identical ligands occupy the vertices of a triangular face of the octahedron. For the given complex, the fac isomer would have the three NH3 groups and the three NO2 groups on opposite faces of the octahedron.
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Meridional (mer) isomer: In this isomer, three identical ligands occupy the positions along the meridian. For the given complex, the mer isomer would have the three NH3 groups and the three NO2 groups in a meridional position.
So, there are 2 geometrical isomers possible for the complex [Co(NH3)3(NO2)3].
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