Table 1. Crystal parameters of the salts.
| Entry | Handedness | Space group | θr (°)* | θd (°)† |
|---|---|---|---|---|
| A(1) | R-supM | P212121 | +5.3 | +1.25 |
| A(2-o) | R-supP | C2 | −34.8 | +62.17 |
| B(2-o) | S-supM | C2 | +32.8 | −62.05 |
| A(2-p) | R-supM | P212121 | +28.4 | −6.42 |
| A(3-o) | R-supP | C2 | −41.2 | +69.44 |
| A(3-p) | R-supM | P212121 | +11.0 | −3.24 |
| A(4-o) | R-supP | C2 | −36.7 | +62.97 |
| A(4-p)-c‡ | R-supM | P212121 | +28.8 | −9.31 |
| A(4-p)-t | R-supP | P212121 | −19.8 | +33.46 |
| A(5-o) | R-supP | C2 | −36.4 | +61.97 |
| A(5-p)-c | R-supM | P212121 | +28.1 | −9.16 |
| A(5-p)-t | R-supP | P212121 | −22.5 | +34.22 |
*Tilted angles of the carboxylates compared with line l, which is perpendicular to the helical axis.
†Angles of the carboxylic groups compared with the benzene rings.
‡See reference 23.