Modelling dispersion interactions with traditional density functional theory (DFT) is a challenge that has been extensively addressed in the past decade. The exchange-dipole moment (XDM), among others ...

The most sterically crowded alkanes prepared so far are 1 19 and 2 20, with C–C bonds of up to 1.65 Å. They are considered thermally labile, as expressed in the half-life of 1 h for 2 at 167 °C. Even ...