Table 2. Experimental details.
| Crystal data | |
| Chemical formula | C20H42N4 2+·2ClO4 − |
| M r | 537.47 |
| Crystal system, space group | Monoclinic, P21/n |
| Temperature (K) | 220 |
| a, b, c (Å) | 10.689 (2), 8.4450 (17), 14.020 (3) |
| β (°) | 92.90 (3) |
| V (Å3) | 1263.9 (4) |
| Z | 2 |
| Radiation type | Synchrotron, λ = 0.630 Å |
| μ (mm−1) | 0.22 |
| Crystal size (mm) | 0.08 × 0.08 × 0.08 |
| Data collection | |
| Diffractometer | Rayonix MX225HS CCD area detector |
| Absorption correction | Empirical (using intensity measurements) (HKL3000sm SCALEPACK; Otwinowski et al., 2003 ▸) |
| T min, T max | 0.957, 1.000 |
| No. of measured, independent and observed [I > 2σ(I)] reflections | 12842, 3549, 3164 |
| R int | 0.063 |
| (sin θ/λ)max (Å−1) | 0.696 |
| Refinement | |
| R[F 2 > 2σ(F 2)], wR(F 2), S | 0.055, 0.172, 1.11 |
| No. of reflections | 3549 |
| No. of parameters | 158 |
| H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
| Δρmax, Δρmin (e Å−3) | 0.86, −0.44 |