Table 1. Pb–Pb Distances aPb1–Pb2 and aPb2–Pb3 at 0 K and the Averaged Pb–Pb Distances bPb1–Pb2 and bPb2–Pb3 at 300 K around the Anion-Substituted Site (See Figure 1).
| aPb1–Pb2 (Å) | aPb2–Pb3 (Å) | bPb1–Pb2 (Å) | bPb2–Pb3 (Å) | |
|---|---|---|---|---|
| FAPbI3 | 6.35 | 6.50 | 6.32 | 6.46 |
| IBF4 | 6.98 | 6.56 | 6.80 | 6.52 |
| IPF6 | 7.26 | 6.61 | 7.16 | 6.60 |
| ISCN | 6.57 | 6.51 | 6.52 | 6.49 |