| Chemical shift (δ) | Nature of peak | No. of Protons | Assignment |
| 7.2-7.4 | m | 10 | Aromatic proton |
| 5.5 | t | 1 | Benzylic proton at C-2 |
| 5.6 | t | 1 | Benzylic proton at C-6 |
| 3.4 | m | 2 | Methylene proton at C-3 |
| 3.5 | m | 2 | Methylene proton at C-5 |
| 10.1 | s | 2 |  |
| 8.1 | s | 1 |  |
|
||||||||||||||||||||||||||||||||
| Table 3: 1H-NMR data of the compound N-nitroso-2,6-diphenylpiperidin-4-one semicarbazone. |
