1. Rotation away from the staggered conformation interrupts this stabilizing force. 2. Both of these staggered conformations are much more stable than the eclipsed conformations. 3. Here they are shown in a staggered conformation . 4. More complex molecules, such as butane, have more than one possible staggered conformation . 5. For example, ethane ( C 2 H 6 ) has three equivalent staggered conformations . 6. X-ray crystallography confirmed that octaphenylrhodocene has a sandwich structure with a staggered conformation . 7. Despite this apparent freedom, only two limiting conformations are important : eclipsed conformation and staggered conformation . 8. The barrier of rotation between staggered conformations of ethane is approximately 2.9 kcal / mol. 9. Two of these are recognised as energy minimum ( staggered conformation ) and energy maximum ( eclipsed conformation ) forms. 10. The energetic stabilization of this effect is maximized when the two orbitals have maximal overlap, occurring in the staggered conformation .