Compare the dipole moments of p-Toluidine and p-anisidine. Is the dipole moment of (a) greater than, less than or equal to that of (b) ?
(a)
(b)

Question

Compare the dipole moments of p-Toluidine and p-anisidine. Is the dipole moment of (a) greater than, less than or equal to that of (b) ? (a) (b)

TestHub · Accepted Answer

The OC H 3 ​ group in p-anisidine has a stronger +M effect than the C H 3 ​ group (which has only +I and hyperconjugation), so the charge transfer in the ring is larger. So a < b.

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