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Question
What type of isomerism is exhibited by the complex [Co(NH3)5Cl]SO4?
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Solution
The complex [Co(NH3)5Cl)]SO4 exhibits ionization isomerism. This occurs because the counterions (\[\ce{SO^{2-}_4}\] and Cl−) can switch places, resulting in different isomers like [Co(NH3)5SO4)]Cl. Despite having the same composition, these isomers differ in the ions present in solution.
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RELATED QUESTIONS
Give evidence that [Co(NH3)5Cl]SO4 and [Co(NH3)5SO4]Cl are ionisation isomers.
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Due to the presence of ambidentate ligands coordination compounds show isomerism. Palladium complexes of the type \[\ce{Pd(C6H5)2 (SCN)2]}\] and \[\ce{[Pd(C6H5)2 (NCS)2]}\] are ______.
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Match the complex species given in Column I with the possible isomerism given in Column II and assign the correct code:
| Column I (Complex species) | Column II (Isomerism) |
| A. \[\ce{[Co(NH3)4 Cl2]^+}\] | 1. optical |
| B. \[\ce{cis-[Co(en)2 Cl2]^+}\] | 2. ionisation |
| C. \[\ce{[Co(NH3)5 (NO2)]Cl2}\] | 3. coordination |
| D. \[\ce{[Co(NH3)6][Cr(CN)6]}\] | 4. geometrical |
| 5. linkage |
Assertion: Linkage isomerism arises in coordination compounds containing ambidentate ligand.
Reason: Ambidentate ligand has two different donor atoms
CoSO4Cl.5NH3 exists in two isomeric forms ‘A’ and ‘B’. Isomer ‘A’ reacts with AgNO3 to give white precipitate, but does not react with BaCl2. Isomer ‘B’ gives white precipitate with BaCl2 but does not react with AgNO3. Answer the following questions.
- Identify ‘A’ and ‘B’ and write their structural formulas.
- Name the type of isomerism involved.
- Give the IUPAC name of ‘A’ and ‘B’.
A functional isomer of 1-butyne is
The complex [Co(NH3)5(NO2)]Cl2 is red in colour. Give IUPAC the name of its linkage isomer.
