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anonymous
 one year ago
What is the energy barrier for the counterclockwise rotation of the rear carbon in the following Newman projection?
(I just need a minute to draw the projection out!)
anonymous
 one year ago
What is the energy barrier for the counterclockwise rotation of the rear carbon in the following Newman projection? (I just need a minute to draw the projection out!)

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1443127449642:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I struggle with Newman projections and don't know if i'm doing this right but in the Newman Projection to the left dw:1443127849169:dw would this be correct so far?

Frostbite
 one year ago
Best ResponseYou've already chosen the best response.0I'm not quite sure what you exactly what you want. Do you want a energy profile?

Frostbite
 one year ago
Best ResponseYou've already chosen the best response.0Alright. Now the molecule building sets would be an advantage, but the Newman projection is perfect for it. In energy profiles regarding bond rotation one of the most important things to have in mind is steric hindrance. This must obviously occur at the highest whenever we have two groups aligned. And the steric hindrances must also become larger when the side groups become larger (as a rule of thumb). dw:1443128650635:dw Try draw the energy profile as a function of the bond rotation from 0 to 360 degrees.

Frostbite
 one year ago
Best ResponseYou've already chosen the best response.0You can maybe use this for inspiration: http://www.chemgapedia.de/vsengine/media/vsc/en/ch/2/oc/stoffklassen/systematik_struktur/acyclische_verbindungen/gesaettigte_kohlenwasserstoffe/alkane/butan_rotation_en.gif I sure hope this is what you are looking for.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Thank you for the link! I'm going to draw it and see what I can come up with

Frostbite
 one year ago
Best ResponseYou've already chosen the best response.0Sounds good. I can always come and check if it is.
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