In which of the following complexes more than one type of structural isomerism is possible?

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

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

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

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[C r (D M G)_{3}]

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Solution

The correct options are
A $[C o (N H_{3})_{5} (N O_{2})] C l$
B $[C o (N H_{3})_{5} (H_{2} O)] (N O_{2})_{3}$
C $[P t (N H_{3})_{4}] [P t (S C N)_{4}]$
Structural isomerism in coordination compounds can be of following types-
Ionisation isomerism
This is due to difference in ionisable group,
Eg: $[C O {(N H_{3})}_{5} C l] S O_{4}$ & $[C O {(N H_{3})}_{5} S O_{4}] C l$
Polymerisation isomerism
Compounds having same emperical formula, but different molecular weights.
Eg- $[P t {(N H_{3})}_{2} C l]$ & $[P t {(N H_{3})}_{4} C l] [P t {C l}_{4}]$
Hydrate isomerism
Isomerism due to different number of water molecules attached to ligands.
Eg: $[C r {(H_{2} O)}_{6}] {C l}_{3}$ & $[C r {(H_{2} O)}_{5} C l] {C l}_{2} (H_{2} O)$
Linkage Isomerim
Having different kind of linkage to the central metal ion.
Coordination Isomerism
When ligand itself exhibits different isomeric forms.
Eg: $[C O {(N H_{3})}_{6}] [C r {(C N)}_{6}]$ & $[C r {(N H_{3})}_{6}] [C O {(C N)}_{6}]$

Ligand Isomerism
When ligand itself exhibits different isomeric forms
Eg: $O - t o l u i d i n e$ & $m - t o l u i d i n e$ .
Only option ( $D$ ) couldn't exhibit more than one type of isomerism, because of the same three ligands ( $D M G$ ).

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Similar questions

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

Indicate the types of isomerism exhibited by the following complexes and

draw the structures for these isomers:

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

[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)

[P t (N H_{3})_{4}]^{2 +}

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