Table 2. Calculated interaction energies (kJ mol−1).
Interaction energies were calculated employing the CE-B3LYP/6–31G(d,p) functional/basis set combination. The scale factors used to determine Etot are kele = 1.057, kpol = 0.740, kdis = 0.871, and krep = 0.618 (Mackenzie et al., 2017 ▸). R is the distance between the centroids of the interacting molecules.
| Path | Symmetry code | Typea | R (Å) | E ele | E pol | E dis | E rep | E tot |
|---|---|---|---|---|---|---|---|---|
| A⋯B |
x + , y, −z +
|
stacking | 5.77 | −5.3 | −2.1 | −66.2 | 30.8 | −45.8 |
| A⋯C | −x + 1, −y + 1, −z + 1 | stacking | 12.05 | −6.1 | −2.4 | −25.1 | 9.3 | −24.3 |
| B⋯C | −x + , −y + 1, z +
|
tetrel | 15.89 | −10.5 | −2.7 | −5.0 | 8.2 | −12.4 |
| A⋯D |
x + 1, y + , z +
|
C—H⋯O, dispersion | 8.93 | −10.3 | −2.0 | −25.3 | 19.5 | −22.4 |
| A⋯E | −x + , y + , z
|
C—H⋯N | 8.73 | −10.1 | −2.7 | −11.7 | 8.2 | −17.8 |
| A⋯F |
x + , y − , z
|
C—H⋯O | 8.79 | −4.2 | −0.5 | −20.4 | 10.8 | −15.8 |
| A⋯G |
x + , −y + , −z + 1 |
dispersion | 9.56 | −4.3 | −1.6 | −16.0 | 7.4 | −15.1 |
Note: (a) For details of the interaction modes see Fig. 6 ▸. Weak dispersion interaction A⋯G is not shown in the Figure.

