Welcome to the Chair Drawing tutorial!
This article will walk you through using the Chair Interactive and Chair "Flip" setting. If they haven't, you may want to ask your instructor to assign the identical tutorial for your course. That version will allow you to follow along with these steps directly.
About Chair Flips
In a cyclohexane chair flip (or ring-flip) the carbon skeleton undergoes inversion with respect to a plane resulting in “flipping” of substituents in the following pattern:
- all equatorial substituents become axial
- all axial substituents become equatorial
- all substituents will maintain the direction they are facing
- substituents that are “up” remain “up”
- substituents that are “down” remain "down"
In this example question, your goal is to draw and submit the conformation B. Conformer B is the cyclohexane chair flip (or ring-flip) of Conformer A. In this question both versions are shown, but not all questions will show both versions. To see the example images in questions, scroll down from the question statement. If there is an example, clicking the image will zoom in on the structure.
To draw Conformer B, start by selecting the proper conformation of the cyclohexane ring using the “Flip” button. If the question has multiple drawing areas, make sure to select the correct one to begin drawing. Note that if you began drawing before flipping, you will have to start over as the flip clears the diagram.
Next, add in the substituents to the proper location on the flipped ring by clicking on the light bond areas to fill them in. If needed, then select the correct element on the Atoms, Bonds and Rings area.
You're all set! As always, feel free to reach out to email@example.com with any questions.