The dipole moment of chlorobenzene is lower than that of cyclohexyl chloride.

Question

Give reasons :

The dipole moment of chlorobenzene is lower than that of cyclohexyl chloride.

Answer 1

In chlorobenzene,carbon to which chlorine is attached to sp² hybridised and is more electronegative than the corresponding carbon in cyclohexyl chloride which is sp³ hybridised so the dipole moment is lower in chlorobenzene.So the dipole moment is Iower in chlorobenzene In chlorobenzene,-I and + R effect oppose each other while in the other only-I effect is the only contributing factor resulting in lower dipole moment of cyclohexyl chloride.