Question

Why is there no hydrogen bonding in methoxymethane?

Answer 1

these hydrogen's cannot hydrogen bond the reason for that is because they're not attached to an electronegative element. so our hydrogen bond is going to be between the oxygen with a lone pair of electrons. and the hydrogen or another molecule the hydrogen bond goes through the lone pair of electrons toward

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Answer 2

In methoxymethane, the lone pairs on the oxygen are still there, but the hydrogens aren't sufficiently δ+ for hydrogen bonds to form. Except in some rather unusual cases, the hydrogen atom has to be attached directly to the very electronegative element for hydrogen bonding to occur.

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