Table 1. Crystallographic data.
| 1 | 4 2 | 3 | 5 | 6 | |
| Formula | C36H72Cu2.01Li1.99N4 | C30H46Cu2Li2N2 | C33H59Cu2Li2N3 | C33H59Cu3.12Li0.88 N3 | C33H59Cu4N3 |
| M | 702.64 | 575.65 | 638.79 | 702.39 | 751.99 |
| Crystal system | Monoclinic | Orthorhombic | Monoclinic | Orthorhombic | Orthorhombic |
| Space group | P21/c | Pbca | P21/n | Pbca | Pca21 |
| a (Å) | 11.679(2) | 8.6647(2) | 15.4346(5) | 11.3882(2) | 11.2175(4) |
| b (Å) | 22.808(5) | 16.1964(4) | 12.0863(4) | 18.8747(4) | 15.9250(6) |
| c (Å) | 15.234(3) | 21.7364(6) | 19.5308(6) | 31.9081(7) | 18.9824(7) |
| α (°) | 90 | 90 | 90 | 90 | 90 |
| β (°) | 108.90(3) | 90 | 110.2960(10) | 90 | 90 |
| γ (°) | 90 | 90 | 90 | 90 | 90 |
| V (Å3) | 3839.1(15) | 3050.42(13) | 3417.21(19) | 6858.7(2) | 3391.0(2) |
| Z | 4 | 4 | 4 | 8 | 4 |
| ρ calcd (Mg m–3) | 1.216 | 1.253 | 1.242 | 1.360 | 1.473 |
| λ (Å) | 0.71073 | 1.54184 | 1.54184 | 1.54184 | 1.54184 |
| μ (mm–1) | 1.143 | 1.839 | 1.694 | 2.405 | 2.997 |
| Data | 32 751 | 20 457 | 28 978 | 38 994 | 23 738 |
| Unique data | 7474 | 2678 | 6023 | 6044 | 5601 |
| R int | 0.0384 | 0.0366 | 0.0406 | 0.0415 | 0.0252 |
| θ (°) | 3.778–26.017 | 4.064–66.424 | 3.167–66.751 | 2.770–66.634 | 2.775–66.611 |
| wR 2 | 0.1051 | 0.0806 | 0.0870 | 0.1063 | 0.0715 |
| R | 0.0478 | 0.0326 | 0.0319 | 0.0491 | 0.0234 |
| GoF | 1.242 | 1.062 | 1.013 | 1.280 | 1.146 |
| Flack parameter | n/a | n/a | n/a | n/a | –0.03(2) |
| Parameters | 417 | 167 | 373 | 374 | 373 |
| Peak/hole (eÅ–3) | 0.405/–0.273 | 0.258/–0.330 | 0.368/–0.434 | 0.404/–0.380 | 0.306/–0.377 |