Question

Why there is no Hyperconjugation in Carbanion?

Answer 1

• A carbanion is carbon holding Negative charge have ${\mathrm{sp}}^3$Hybridisation that has 1 Loan pair of Electrons. Because of loan pairs of electrons, there is obviously generated repulsion between them . There is no doubt that they will undergo in bonding contact with adjacent C-H Bond.
• Hyperconjugation is a lasting Effect in which $\mathrm{\sigma }$ electrons of the C-H Bond of an alkyl group are directly attached to an atom of the unsaturated system means a Double bond Containing or sometimes to an atom of the non-shared p orbital.
• We can say Hyperconjugation is a stabilizing reaction that is arising from the interaction of electrons in a $\mathrm{\sigma }$ - bond (Usually $\mathrm{C}-\mathrm{H}\mathrm{or}\mathrm{C}-\mathrm{C}$ ) With a p orbital also or A $\mathrm{\pi }$orbital adjacent to give an expanded molecular orbital that enhances the system stability.