Cyclohexane - Cis and Trans

Before we can really understand chair conformations, we have to practice drawing them! These tricky little suckers can be hard to get right.  

Method for Drawing Chairs

  1. Draw two slightly angled parallel lines. 
  1. Cap both ends off

Cis and Trans

Cis or trans is based on whether the groups are facing the same face (top or bottom) of the ring.

  • It has nothing to do with the axial and equatorial positions!

Example: Is the following cyclohexane cis or trans? 

1m

Example: Is the following cyclohexane cis or trans? 

1m