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1H-NMR data of the ligands and organotin(IV) complexes.
| compound | HC=N | –OH | Ar–H | –NH | Sn–CH3 | O–CH3 |
|---|---|---|---|---|---|---|
| L1 | 9.45 | 10.67 | 6.92–7.91 | — | — | — |
| 1 | 9.46 | 10.63 | 6.90–7.88 | — | — | — |
| 2 | 9.46 | 10.65 | 6.92–7.94 | — | — | — |
| L2 | 9.77 | 10.26 | 6.01–7.95 | 11.24 | — | 3.84 |
| 3 | 9.77 | 10.28 | 6.01–7.93 | 11.30 | 1.03 | 3.84 |
| 4 | 9.75 | 10.26 | 6.01–7.95 | — | 1.03 | 3.82 |
