Hydrogen peroxide

Physical properties

Hydrogen peroxide adopts a "skewed" shape, due to repulsion between the lone pairs on the oxygen atoms. Despite the fact that the O-O bond is a single bond, the molecule has a remarkably high barrier to complete rotation of 29.45 kJ/mol; this is also caused by the lone pair repulsion.

Related Topics:
Lone pair - KJ - Mol

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The bond angles are affected greatly by hydrogen bonding, which explains the difference between gaseous and crystalline forms; indeed a wide range of values is seen in crystals containing molecular H2O2.

Related Topics:
Bond angle - Hydrogen bonding

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