Rotation of Single Bonds H H H H o bond H H methyl group methyl group ethane rotate H H H H H H H H eclipsed staggered 。 Ethane is composed of two methyl groups bonded by the overlap of their sp3 hybrid orbitals. There is free rotation along single bonds. 2013 Pearson Education,Inc. Chapter 2 22 © 2013 Pearson Education, Inc. Rotation of Single Bonds • Ethane is composed of two methyl groups bonded by the overlap of their sp3 hybrid orbitals. • There is free rotation along single bonds. Chapter 2 22