Compare the dipole moments of fulvene (a) and sesquifulvalene (b). Is the dipole moment of (a) greater than, less than or equal to that of (b) ?
(a) (b)

Question

Compare the dipole moments of fulvene (a) and sesquifulvalene (b). Is the dipole moment of (a) greater than, less than or equal to that of (b) ? (a) (b)

TestHub · Accepted Answer

Fulvene (about 0.4 D) gains 6π cyclopentadienide character only in its dipolar form. In sesquifulvalene (about 2 D) the dipolar form has a tropylium cation and a cyclopentadienide anion, so both rings are aromatic and the charge separation is larger. So a < b.

Chemistry - GOC Question with Solution | TestHub

Options:

Doubts & Discussion