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Structural Isomerism

The complexes...

Question

The complexes [Cr(NH $_{3}$ ) $_{6}$ ] [Co(CN) $_{6}$ ] and [Co(NH $_{3}$ ) $_{6}$ ] [Cr(CN) $_{6}$ ] are not the examples of :

A

Geometrical isomers

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B

Optical isomers

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C

Coordination isomers

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D

Linkage isomers

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Solution

The correct options are
A Geometrical isomers
C Optical isomers
D Linkage isomers
The complexes [Cr(NH $_{3}$ ) $_{6}$ ] [Co(CN) $_{6}$ ] and [Co(NH $_{3}$ ) $_{6}$ ] [Cr(CN) $_{6}$ ] are the examples of coordination isomers
Coordination isomerism is shown by compounds in which both cation and the anion are complexes. The isomers differ as a result of different groups being coordinated about a particular coordination center.

Here in this example both cation and anion are complexes.
The complexes [Cr(NH $_{3}$ ) $_{6}$ ] [Co(CN) $_{6}$ ] and [Co(NH $_{3}$ ) $_{6}$ ] [Cr(CN) $_{6}$ ] are not the examples of Geometrical isomers,Optical isomers and Linkage isomers.

Hence options A,B & D are correct.

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_{3}

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Q. The complexes

[C o (N H_{3})_{6}] [C r (C N)_{6}] a n d [C r (N H_{3})_{6}] [C o (C N)_{6}]

are the examples of which type of isomerism?

Match the complex ions given in Column I with the possible isomerism given in Column II and assign the correct code.

$\begin{matrix} Column~I & Column~II (C o m p l e x s p e c i e s) & (I s o m e r i s m) A . [C o (N H_{3})_{4} C l_{2}]^{+} & 1. O p t i c a l B . c i s - [C o (e n)_{2} C l_{2}]^{+} & 2. I o n i s a t i o n C . [C o (N H_{3})_{5} (N O_{2})] C l_{2} & 3. C o o r d i n a t i o n D . [C o (N H_{3})_{6}] [C r (C N)_{6}] & 4. G e o m e t r i c a l \end{matrix}$

Codes

$\begin{matrix} A & B & C & D (a) & 1 & 2 & 4 & 3 (b) & 4 & 3 & 2 & 1 (c) & 4 & 2 & 1 & 3 (d) & 4 & 1 & 2 & 3 \end{matrix}$

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