Equatorial Priority

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Rhea Palsule
Posts: 22
Joined: Fri Sep 25, 2015 3:00 am

Equatorial Priority

Postby Rhea Palsule » Fri Mar 11, 2016 4:18 pm

Do you determine which element substituent is prioritized to get the equatorial position in a chair conformation based on higher atomic number or higher atomic radius? For example with Br and Cl as substituents.

Christine Rae 1I
Posts: 17
Joined: Fri Sep 25, 2015 3:00 am

Re: Equatorial Priority

Postby Christine Rae 1I » Fri Mar 11, 2016 4:58 pm

The larger substituent will have a greater preference towards the equatorial position because it is more stable. For instance, in cis-1-propyl-3-methylcyclohexane, the propyl would be in the equatorial position because it is the larger and more bulky substituent, while the methyl would be in the axial position.

In your question, I believe the Br would be in the equatorial position.


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