Energy vs. Dihedral angle graph

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904638389
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Joined: Fri Sep 25, 2015 3:00 am

Energy vs. Dihedral angle graph

Postby 904638389 » Sat Mar 12, 2016 9:58 pm

When making this graph about a newman projection, do you start at a certain point as 0 degrees? do you have to start at eclipsed or staggered? My question is where do I start when Im drawing this graph, what angle and how?

Irena Roy 4H
Posts: 40
Joined: Fri Sep 25, 2015 3:00 am

Re: Energy vs. Dihedral angle graph

Postby Irena Roy 4H » Sat Mar 12, 2016 10:05 pm

I'd start at 0 degrees because it's simply more practical, and convenient. Say for example, you have two bromine atoms, each attached to a carbon atom on an ethane molecule. At 0 degrees, both Br molecules would give the conformation steric strain, making it the highest energy conformation. Every sixty degrees, you'd draw your graph accordingly. It's just easier that way. So to answer your question, I'd personally start off at 0 degrees, which is typically the highest energy eclipsed conformation.


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