11
This is due to dipole -dipole repulsion in ortho isomer that inc bond angle geater than 60° and thus dipole moment dec.
theta dec, dipole moment inc
Dipole moment dec, no change in actual value.
Dipole moment in aromatic system
can any 1 could explain?
THANKS in advance
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5 Answers
1111
(b) and (d) are symmetrical and thus resultant dipole moment is zero.
In (a) bond moments are towards the same direction but in (c) there is a net dipole at the c2 position. Thus the dipole moment of (a) is max.
(b) = (d) < (c) < (a)
106tushar:
with reference to #2, the dichloro substituent has higher dipole moment not the dimethyl substituent one