In 2, the empty p orbital on C 1 and the sp 3 -hybridized orbital on C 2 participating in C 2 —H 1 bond are more or less parallel, allowing parallel overlap, which lowers the electron deficiency at C ...In 2, the empty p orbital on C 1 and the sp 3 -hybridized orbital on C 2 participating in C 2 —H 1 bond are more or less parallel, allowing parallel overlap, which lowers the electron deficiency at C 1 but makes the H 1 electron deficient. The structure of the ethyl carbocation, according to the theory of hyperconjugation, can be shown conveniently using a series of resonance forms.
