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Karnataka Board PUCPUC Science 2nd PUC Class 12

Identify the optically active compounds from the following: (i) [Co(en)X3]X3+ (ii) [trans−[Co(en)X2ClX2]X+ (iii) cis−[Co(en)X2ClX2]X+ (iv) [Cr(NHX3)X5Cl]

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Question

Identify the optically active compounds from the following:

(i) \[\ce{[Co(en)3]^{3+}}\]

(ii) \[\ce{[trans - [Co(en)2Cl2]^+}\]

(iii) \[\ce{cis - [Co(en)2Cl2]^+}\]

(iv) \[\ce{[Cr(NH3)5Cl]}\]

Short/Brief Note
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Solution

(i) \[\ce{[Co(en)3]^{3+}}\]

(iii) \[\ce{cis - [Co(en)2Cl2]^+}\]

Explanation:

\[\ce{[Co(en)3]^{3+}}\] and \[\ce{[Co(en)2Cl2]^{2+}}\] are optically active compounds because their mirror images are non-superimposable isomer.


Non – superimposable isomers of \[\ce{[Co(en)3]^{3+}}\]


Non – superimosable isomers of \[\ce{[Co(en)2Cl2]^+}\]

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Isomerism in Coordination Compounds - Stereoisomerism
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Chapter 9: Coordination Compounds - Exercises [Page 123]

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NCERT Exemplar Chemistry Exemplar [English] Class 12
Chapter 9 Coordination Compounds
Exercises | Q II. 21. | Page 123

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