Question

What type of intermolecular forces are expected between 4-ethoxypyridine molecule?

Answer 1

The type of intermolecular forces are the following: -

1. Dipole - Dipole forces - The given molecule possesses a negligible dipole moment in the direction of the oxygen molecule due to the fact that both oxygen and nitrogen are electronegative atoms and hence try to attract electrons and oxygen is more electronegative, but its electron deficiency is being satisfied by the ethyl group. This results in both the atoms contributing similar amounts to the net dipole moment but in opposite directions. Hence, the net dipole moment and the dipole - dipole interactions will be negligible.

2. Dipole - Induced Dipole forces -   Since there is nearby dipole to induce distortion in the electron cloud of the molecule there will be any observable Induced Dipole forces.

3. Hydrogen-Bonding -

For hydrogen-bonding, there are two conditions:

1. A highly electronegative atom is bonded to hydrogen in the molecule (N,O,F).
2. Molecule has a small, highly electronegative atom with a lone pair of electrons (N,O,F).

Since this molecule does fulfil either of these conditions. Hence there will be no Hydrogen-bonding

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