Ethane gives a classic, simple example of such a rotational barrier, sometimes called the "ethane barrier.

Ethane gives a classic, simple example of such a rotational barrier, sometimes called the "ethane barrier".

Although the O−O bond is a single bond, the molecule has a relatively high barrier to rotation of 2460 cm−1 (29.45 kJ/mol);[5] for comparison, the rotational barrier for ethane is 12.5 kJ/mol.

Although the O-O bond is a single bond, the molecule has a relatively high barrier to rotation of 29.45 kJmol-1 (2460 cm-1); for comparison, the rotational barrier for ethane is just 12.5 kJmol-1.

Although the O-O bond is a single bond, the molecule has a relatively high rotational barrier of 2460 cm-1 (29.45 kJ/mol);[11] for comparison, the rotational barrier for ethane is 12.5 kJ/mol.