Spaces | Geometric names of the family | Crystal cell names | Length parameters | Angular parameters |
E2 | oblique | parallelogramm | 2 | 1 |
E3 | triclinic | oblique parallelepipede | 3 | 3 |
E4 | hexaclinic | «maxiclinic» parallelotope | 4 | 6 |
E5 | decaclinic |
| 5 | 10 |
E6 | pentadiclinic |
| 6 | 15 |