Question

Please explian hyperconjuction

Answer 1

Sigma bonds are when the bonds repel each other like single bonds with different atoms attached.

Pi bonds are overlap of bonds like double bonds.

Hyperconjunction is when a sigma and pi bond overlap. so its likes having a strong, single bond with a weak second bond. You can also see this as when a structure has resonance, i.e.; C=O-C vs C-O=C both are the same exact compound, just that third bond is a weak bond shared with BOTH carbons (1.5 electrons vs 2)