The H abstraction C-C group consists of Minisci-like reactions , which most likely occur through an initial hydrogen atom transfer (HAT) pathway and subsequently numerous singleelectron transfer (SET) pathways, indicating radicals are the most likely intermediates. However, the severe performance for all methods (MCC: 0.27-0.36) may indicate the reactions are not governed by thermodynamic stability but rather by kinetic effects. Miscellaneous reactions are based on a review by Miller et al. . Hydride transfer likely occurs when using DDQ as the oxidant, especially with carbocations stabilized by heteroatoms, but hydrogen atom abstraction may compete in non-heteroatom-stabilized carbocations. Chan and Radom found that DDQ reactions in the gas phase predominantly proceed via hydrogen abstraction, while substrates with carbocation-stabilizing groups in polar solvents undergo hydride abstraction.