Table 5. Calculated packing efficiency and stability of different modifications of diacids under ambient conditions.
| Diacid | Form | M | Z | V (Å3) | PE† | ΔPEI-II ‡ | Stability | CCDC |
|---|---|---|---|---|---|---|---|---|
| DA5 | I | 132.11 | 4 | 595.2 | 0.8878 | 0.0749 | >15 d | 1061299 |
| II | 132.11 | 8 | 1300.1 | 0.8129 | <1 h | 891106 | ||
| DA7 | I | 160.17 | 4 | 775.656 | 0.8260 | 0.0301 | >15 d | 1233866 |
| II | 160.17 | 4 | 805 | 0.7959 | >15 d | 929796 | ||
| DA9 | I | 188.22 | 4 | 959.261 | 0.7849 | 0.0159 | >15 d | 1104213 |
| II | 188.22 | 4 | 978.978 | 0.7690 | >15 d | 929807 | ||
| DA11 | I | 216.27 | 4 | 1143.2 | 0.7567 | 0.0145 | >15 d | 1841530 |
| II | 216.27 | 4 | 1165.6 | 0.7422 | >15 d | 1841531 | ||
| DA13 | II | 244.33 | 4 | 1364.3 | 0.7164 | – | >15 d | 1941171 |
| DA15 | II | 272.38 | 4 | 1508.8 | 0.7221 | – | >15 d | 1941172 |
†
Packing efficiency, 
.
‡
Difference in packing efficiency between forms I and II.