Coordination Compounds 1 Question 11

####11. Which of the following complex species is not expected to exhibit optical isomerism?

(2013 Main)

(a) [Co(en)3]3+

(b) [Co(en)2Cl2]+

(c) [Co(NH3)3Cl3]

(d) [Co(en)(NH3)Cl2]+

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Answer:

Correct Answer: 11. paramagnetism

Solution:

  1. Optical isomerism is exhibited by only those complexes which lacks elements of symmetry. [Co(NH3)3Cl3] shows facial as well as meridional isomerism. But both the forms contain plane of symmetry. Thus, this complex does not exhibit optical isomerism.


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