Table 2. Continuous shape measurement (CShM) values (SHAPE 2.1) for the seven-coordinate sodium ion of 1 .
| Heptagon | 34.157 |
| Hexagonal pyramid | 19.758 |
| Pentagonal bipyramid | 8.496 |
| Capped octahedron | 3.683 |
| Capped trigonal prism | 3.798 |
| Johnson pentagonal bipyramid | 12.331 |
| Johnson elongated triangular pyramid | 21.938 |