How to draw axial and equatorial bonds on cyclohexane?

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How to draw axial and equatorial bonds on cyclohexane?

Postby Chem_Mod » Thu Oct 27, 2011 3:15 pm

I am confused about drawing conformations in Ch. 20. I know we learned during lecture to draw cyclohexane with axial up, and equitorial down, and then alternating for the rest of the carbons, but do the book answers also follow that format? In addition, do we draw the alternating axial and equitorial bonds only for the most stable conformations?

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Re: How to draw axial and equatorial bonds on cyclohexane?

Postby Chem_Mod » Thu Oct 27, 2011 3:15 pm

Axial is not always up, equatorial is not always down. Draw the axial bonds vertically, then draw the equatorial bonds. If both substituents on a carbon in cyclohexane are hydrogen, you can neglect these bonds.

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Re: How to draw axial and equatorial bonds on cyclohexane?

Postby Chem_Mod » Wed Aug 13, 2014 9:24 am

Look at the two cyclohexane molecules below. They are the exact same molecule but have gone through a ring flip and thus the hydrogen that was once axial up became equatorial up. And the hydrogen that was axial down became equatorial down.
Attachments
cyclohexane.png
cylohexane
cyclohexane (ring flip).png
Cyclohexane with ring flip


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