Table 3. 19F NMR Spectra of Complex (1 mM, CD3OD) and Different Amino Acids (50 mM, CD3OD)a.
| complex | amine | ratio | solvent | complex peak | complex + analyte peak | complex + solvent upfield peak | enantiomer difference |
|---|---|---|---|---|---|---|---|
| CS | CD3OD | –131.23 | –138.99 | ||||
| CR | CD3OD | –131.23 | –138.99 | ||||
| CS | A9D | 1:50 | CD3OD | –131.23 | –139.28 | ||
| CS | A9L | 1:50 | CD3OD | –131.23 | –139.28 | ||
| CS | A9D/L | 1:50 | CD3OD | –131.23 | –139.28 | ||
| CR | A9D | 1:50 | CD3OD | –131.23 | –134.69 | –139.28 | 0.03 |
| CR | A9L | 1:50 | CD3OD | –131.23 | –134.66 | –139.28 | |
| CR | A9D/L | 1:50 | CD3OD | –131.23 | –134.62 | –139.28 | |
| CS | A10D | 1:50 | CD3OD | –131.23 | –135.13 | –138.99 | 0.03 |
| CS | A10L | 1:50 | CD3OD | –131.23 | –135.16 | –138.99 | |
| CS | A10D/L | 1:50 | CD3OD | –131.23 | –135.07 | –138.99 | |
| CR | A10D | 1:50 | CD3OD | –131.23 | –135.09 | –138.99 | 0.22 |
| CR | A10L | 1:50 | CD3OD | –131.23 | –135.31 | –138.99 | |
| CR | A10D/L | 1:50 | CD3OD | –131.23 | –135.09 | –138.99 | |
| CS | A11D | 1:50 | CD3OD | –131.23 | –135.29 | –138.99 | 0.00 |
| CS | A11L | 1:50 | CD3OD | –131.23 | –135.29 | –138.99 | |
| CS | A11D/L | 1:50 | CD3OD | –131.23 | –135.24 | –138.99 | |
| CR | A11D | 1:50 | CD3OD | –131.23 | –135.29 | –138.99 | 0.00 |
| CR | A11L | 1:50 | CD3OD | –131.23 | –135.29 | –138.99 | |
| CR | A11D/L | 1:50 | CD3OD | –131.23 | –135.27 | –138.99 | |
| CS | A12 | 1:50 | CD3OD | –131.23 | –135.31 | –138.99 |
a
The corresponding 19F NMR spectra are given in the order of the table (T = 303 K).