Match List I with List II
|
List-I |
List-II |
||
| (A) | (I) | Solvate isomerism | |
| (B) | (II) | Linkage isomerism | |
| (C) | (III) | Ionization isomerism | |
| (D) | (IV) | Coordination isomerism | |
Choose the correct answer from the options given below:
Correct Answer :
A-II, B-III, C-IV, D-I
Solution :
The correct match is A-II, B-III, C-IV, D-I.
Let us analyze each complex and determine its type of isomerism:
(A)
In this complex, the ligand is an ambidentate ligand. It can coordinate to the central cobalt metal atom through either the nitrogen donor atom (forming a nitro complex, ) or the oxygen donor atom (forming a nitrito complex, ). The existence of such structural variants is known as Linkage isomerism.
Hence, A matches with II.
(B)
This complex can interchange the sulfate group () inside the coordination sphere with the bromide ion () outside the sphere to form the isomer . In solution, these two isomers yield different ions: the first gives bromide ions and the second gives sulfate ions. This phenomenon is known as Ionization isomerism.
Hence, B matches with III.
(C)
This compound features both cationic and anionic complex entities. Isomerism arises when ligands exchange between the two different metal centers (in this case, cobalt and chromium). This exchange of ligands is termed Coordination isomerism.
Hence, C matches with IV.
(D)
In this complex, water molecules act as ligands. Isomers can exist based on whether water molecules are directly bonded inside the coordination sphere or are held in the crystal lattice as free solvent (water of crystallization), such as in . This is called Solvate isomerism (specifically, hydrate isomerism).
Hence, D matches with I.
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