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Coordination Isomerism

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Question

Name the types of isomerism shown by the following pairs of compounds:
(i) $[C u {(N H_{3})}_{4}] [P t {C l}_{4}]$ and $[P t {(N H_{3})}_{4}] [C u {C l}_{4}]$
(ii) ${[C o {(P n)}_{2} {C l}_{2}]}^{+}$ and ${[C o {(t n)}_{2} {C l}_{2}]}^{+}$

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Solution

(i) $[C u {(N H_{3})}_{4}] [P t {C l}_{4}]$ and $[P t {(N H_{3})}_{4}] [C u {C l}_{4}]$ shows coordination isomerism. There is interchange of ligands between cationic and anionic entities of different metal ions present in the complex.
(ii) ${[C o {(P n)}_{2} {C l}_{2}]}^{+}$ and ${[C o {(t n)}_{2} {C l}_{2}]}^{+}$ shows ligand isomerism. Different isomers of same ligand are attached to $C o$ metal. $P n$ is 1,2- Diaminopropane and $t n$ is 1,3-Diaminopropane.

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Q. Name the types of isomerism shown by the following pairs of compounds:
(i)

[C o C l (H_{2} O) (N H_{3})_{4} C l_{2}]

[C o C l_{2} (N H_{3})_{4}] C l \cdot H_{2} O

[P t (N H_{3})_{4}] [P t C l_{6}]

[P t (N H_{3})_{4} C l_{2}] [P t C l_{4}]

Q. Which one of the following pairs of isomers and types of isomerism are correctly matched?
(i)

[C o (N H_{3})_{5} (N O_{2})] C l_{2}

[C o (N H_{3})_{5} (O N O) C l_{2} . . . (L i n k a g e)

[C u (N H_{3})_{4}] [P t C l_{4}]

[P t (N H_{3})_{4}] [C u C l_{4}] . . . (C o o r d i n a t i o n)

[P t C l_{2} (N H_{3})_{4}] B r_{2}

[P t B r_{2} (N H_{3})_{4}] C l_{2} . . . (I o n i z a t i o n)

Select the correct answer using the codes given below:

[P t (N H_{3})_{4}] [C u C l_{4}]

[C u (N H_{3})_{4}] [P t C l_{4}]

Q. The correct name of

[P t {({N H}_{3})}_{4} {C l}_{2}] [P t {C l}_{4}]

Q. What type of isomerism is exhibited by the following pairs of compounds :
(i)

[P t {C l}_{2} {(N H_{3})}_{4}] {B r}_{2}

[P t {B r}_{2} {(N H_{3})}_{4}] {C l}_{2}

{[C r (S C N) {(H_{2} O)}_{5}]}^{2 +}

{[C r (N C S) {(H_{2} O)}_{5}]}^{2 +}

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