Optical Isomerism in Octahedral Coordination of Bidentate Ligands
Which of the ...
Question
Which of the following has an optical isomer?
A
[Co(H2O)4(en)]3+
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B
[Co(en)2(NH3)2]3+
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C
[Co(CN)4]2−
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D
[Co(en)(NH3)2]2+
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Solution
The correct option is B[Co(en)2(NH3)2]3+
The cis form of [Co(en)2(NH3)2]3+ lacks in symmetry as can be seen from the diagram, thus it is optically active.