Nitrosyl Formation
Hardchemistry
Formation of nitrosyl derivative (green coloration) with secondary amine indicates:
Select the correct option:
Solution
Incorrect! Answer:
Presence of secondary amine
- Nitrous Acid Tool: HNO2 reacts differently with different classes of amines.
- Primary (1∘): Form diazonium salts (evolve N2 for aliphatic, stable for aromatic).
- Secondary (2∘): React to form N-nitrosamines.
- Observation: These N-nitroso compounds are typically yellow oily liquids that can exhibit green or yellowish-green coloration upon further chemical treatment (Libbermann's Nitroso Test).
- Diagnostic Conclusion: This characteristic oily derivative confirms the presence of a secondary amine.
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About This Question
- Subject
- chemistry
- Chapter
- nitrogen organics
- Topic
- nitrosyl formation
- Difficulty
- Hard
- Year
- 2025
Solution
Correct Answer:
Presence of secondary amine
- Nitrous Acid Tool: HNO2 reacts differently with different classes of amines.
- Primary (1∘): Form diazonium salts (evolve N2 for aliphatic, stable for aromatic).
- Secondary (2∘): React to form N-nitrosamines.
- Observation: These N-nitroso compounds are typically yellow oily liquids that can exhibit green or yellowish-green coloration upon further chemical treatment (Libbermann's Nitroso Test).
- Diagnostic Conclusion: This characteristic oily derivative confirms the presence of a secondary amine.
This hard difficulty chemistry question is from the chapter nitrogen organics, covering the topic of nitrosyl formation. It appeared in the 2025 exam.
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