Table 1. Selected geometric parameters (Å, °) for (I) .
| Cd1—I14 | 2.7573 (3) | Cd2—I24 | 2.7575 (3) |
| Cd1—I11 | 2.7764 (3) | Cd2—I21 | 2.7610 (3) |
| Cd1—I13 | 2.7949 (3) | Cd2—I22 | 2.7943 (3) |
| Cd1—I12 | 2.8023 (3) | Cd2—I23 | 2.7958 (3) |
| I14—Cd1—I11 | 107.058 (9) | I24—Cd2—I21 | 105.915 (9) |
| I14—Cd1—I13 | 115.503 (10) | I24—Cd2—I22 | 105.260 (8) |
| I11—Cd1—I13 | 103.726 (9) | I21—Cd2—I22 | 116.026 (10) |
| I14—Cd1—I12 | 102.186 (8) | I24—Cd2—I23 | 112.854 (9) |
| I11—Cd1—I12 | 117.300 (9) | I21—Cd2—I23 | 108.090 (9) |
| I13—Cd1—I12 | 111.499 (9) | I22—Cd2—I23 | 108.791 (9) |