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Elemental analyses and some physical properties for Schiff bases 1−5.
| Additive | Ar | Yield (%) | Melting Point (°C) | Calcd. (Found; %) | ||
|---|---|---|---|---|---|---|
| C | H | N | ||||
| 1 | 2-HOC6H4 | 71 | 293−295 | 65.75 (66.03) | 4.14 (4.34) | 19.17 (19.03) |
| 2 | 3-HOC6H4 | 78 | 288−289 | 65.75 (65.94) | 4.14 (4.31) | 19.17 (19.22) |
| 3 | 4-HOC6H4 | 73 | 274−275 | 65.75 (65.95) | 4.14 (4.24) | 19.17 (19.19) |
| 4 | 4-NO2C6H4 | 76 | 266−267 | 54.86 (54.89) | 2.88 (2.97) | 23.99 (24.07) |
| 5 | C6H5CH=CH | 70 | 274−275 | 76.90 (77.13) | 5.16 (5.91) | 17.94 (17.79) |
