Table 4.
13C NMR spectral data of the ligands and their corresponding organosilicon(IV) complexes.
| Compounds | Chemical shift in (δ ppm) | ||||
|---|---|---|---|---|---|
| COOH | CH | C=N | Si–CH3 | Aromatic carbons | |
| L1H | 176.1 | 52.4 | 163.6 | — | 148.5, 131.0, 129.8, 125.3, 122.9, 119.1 |
| Me3SiL1 | 185.4 | 53.3 | 152.4 | 14.10 | 145.3, 131.2, 129.5, 125.1, 122.6, 120.2 |
| L2H | 172.6 | 63.5 | 155.8 | — | 159.9, 130.4, 129.5, 133.8, 110.9, 148.5, 121.3 |
| Me3SiL2 | 180.7 | 64.2 | 150.2 | 13.67 | 155.4, 130.6, 129.2, 134.0, 111.5, 148.1, 121.0 |
| L3H | 178.2 | 60.4 | 162.9 | — | 157.3, 144.6, 136.1, 132.3, 128.4, 122.5, 116.8 |
| Me3SiL3 | 186.1 | 60.1 | 152.6 | 13.90 | 155.9, 144.9, 135.9, 132.3, 129.1, 122.3, 117.2 |
| L4H | 176.8 | 67.8 | 163.4 | — | 149.2, 135.8, 133.0, 128.6, 127.5, 126.3, 124.6, 122.9, 120.1 |
| Me3SiL4 | 184.8 | 66.6 | 151.3 | 13.90 | 146.7, 135.9, 133.2, 127.3, 127.0, 126.5, 124.8, 122.3, 120.4 |
| L5H | 177.4 | 72.6 | 162.4 | — | 160.2, 150.7, 138.1,131.5, 130.4, 128.2, 124.5, 124.1,123.8, 122.6, 121.2, 120.6, 117.4, 112.2, 109.4 |
| Me3SiL5 | 184.7 | 72.3 | 152.7 | 13.98 | 158.1, 149.6, 138.0, 131.7, 130.1, 128.7, 124.8, 124.4, 123.4, 122.3, 121.6, 120.1, 118.8, 112.9, 110.3 |