| Assignment |
IBU |
IBU-CHL |
IBU-TCNQ |
IBU-BTB |
IBU-MO |
IBU-PA |
| (d, CH3) |
δ0.87 |
δ0.87 |
δ0.89 |
δ0.87 |
δ0.87 |
δ0.85 |
| (d, 4CH3) |
- |
- |
- |
δ1.00 |
- |
- |
| (d, CH3) |
δ1.41 |
δ1.43 |
δ1.41 |
δ1.41 |
δ1.43 |
δ1.41 |
| (m, CH) |
δ1.78 |
δ1.83 |
δ1.81 |
δ1.78 |
δ1.78 |
δ1.77 |
| (s, CH3) |
- |
- |
- |
δ1.97 |
- |
- |
| (s, CH3) |
- |
- |
- |
δ2.13 |
- |
- |
| (d, CH2) |
δ2.43 |
δ2.42 |
δ2.44 |
δ2.42 |
δ2.42 |
δ2.41 |
| (s, 2CH3) |
- |
- |
- |
- |
δ3.09 |
- |
| (m, 2CH) |
- |
- |
- |
δ3.28 |
- |
- |
| (m, CH) |
δ3.62 |
δ3.62 |
δ3.64 |
δ3.62 |
δ3.61 |
δ3.60 |
| (m, arayl) |
δ7.07 |
δ7.09 |
δ7.20 |
δ6.94-7.51 |
δ6.81-6.84
δ7.79-7.94 |
δ7.05-7.19
δ7.38-7.71 |
| (s, COOH) |
δ11.0 |
- |
- |
- |
- |
- |
|
