Table 7. Characteristics of the X⋯X interactions in FdCl4, FdI3, FdI4 and FcBr5 .
| R—X⋯X′—R′ | X⋯X (Å) | Θ1 (°) | Θ2 (°) | |Θ1 − Θ2| (°) | XB Type | |
|---|---|---|---|---|---|---|
| FdI3 | C1—I1⋯Br2—C2 | 3.74p | 90.5 | 172.6 | 82.1 | II |
| C1—I1⋯I3—C6 | 3.728 | 174.4 | 115.1 | 59.3 | II | |
| FdI4 | C1—I1⋯I3—C6 | 3.679 | 165.1 | 79.9 | 85.2 | II |
| C2—I2⋯I12—C12 | 3.933 | 159.6 | 97.1 | 62.5 | II | |
| C6—I3⋯I13—C16 | 3.756 | 99.4 | 169.3 | 69.9 | II | |
| C7—I4⋯I12—C12 | 3.823 | 83.0 | 165.8 | 82.8 | II | |
| C11—I11⋯I13—C16 | 3.823 | 163.0 | 70.3 | 92.7 | II | |
| FdCl4 | C11—Cl1⋯Cl2—C21 | 3.504 | 165.5 | 161.5 | 4.0 | I |
| FcBr5 | C2A—Br2A⋯Br3B—C3B | 3.352 | 137.3 | 168.4 | 31.1 | II |
| C2B—Br2B⋯Br3B—C3B | 3.656 | 164.7 | 123.2 | 41.5 | II |