QuestionOrganic / bond lengths and hybridisation
Entacapone is one of the constituents of drug used for Parkinson’s disease. The structure of entacapone is shown below. Match the type of bond from Column-I with the respective bond label from Column-II and select the correct answer using the code given below the columns :
| Column-I | Column-II |
|---|---|
| A. Longest C – C single bond | 1. CH₂ – CH₃ |
| B. Shortest C – C single bond | 2. C – CN |
| C. Longest C – N single bond | 3. C – NO₂ |
| D. Shortest C – N single bond | 4. C ≡ N |
| 5. CH = C(CN) | |
| 6. O = C – N | |
| 7. N – CH₂CH₃ |
Code :
- (a) A-5, B-2, C-6, D-7
- (b) A-1, B-5, C-7, D-4
- (c) A-2, B-1, C-4, D-3
- (d) A-5, B-2, C-3, D-6
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