Hydrogens in Substituents and Conformations

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Suzi Zhu 1K
Posts: 10
Joined: Fri Sep 25, 2015 3:00 am

Hydrogens in Substituents and Conformations

Postby Suzi Zhu 1K » Thu Mar 10, 2016 3:48 am

I noticed while looking through the practice finals that sometimes the hydrogens are drawn and sometimes they aren't. Why does it seem like hydrogens are usually left off when drawing substituents but drawn in comformations? Is this a rule?

Emma Gillette 3J
Posts: 19
Joined: Fri Sep 25, 2015 3:00 am

Re: Hydrogens in Substituents and Conformations

Postby Emma Gillette 3J » Thu Mar 10, 2016 8:23 am

I believe Dr. Lavelle mentioned in class that sometimes the hydrogens are drawn simply to help you orient the other substituents (see if they are axial up, axial down, equatorial up, or equatorial down). However, I think it's also acceptable to just draw the line structure unless asked for something else. The hydrogens are just there to make it easier to see.


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