| Name of the molecule under study | Dihedral angles | |
| (1, 2, 3,) and (5, 1, 2) | (5, 1, 2) and (1, 2, 4) | |
| HM-I | 165.582 | 167.792 |
| HM-II | 127.806 | 132.059 |
| HM-III | 123.993 | 141.587 |
| HM-IV | 125.656 | 136.341 |
| HM-V | 164.336 | 168.827 |
| HM-VI | 163.376 | 171.358 |