Today was a day to look at conformers, in which we take a compound and manipulate it by rotating around bonds. Starting with ethane, we saw how to make STAGGERED and ECLIPSED conformations and looked at the relative energies of each. We moved up to butane and saw how the presence of different substituents can complicate the situation -- we saw GAUCHE and ANTI conformations. The main idea is that conformations are more stable (lower energy) when a molecule can get into a staggered orientation. It was also useful to note that there is a formal way of drawing these conformers, called a NEWMAN PROJECTION. It is worth your effort to become proficient at drawing these projections.
Also, group study sessions will be held on Tuesday and Thursday evenings from 7 - 9 pm.
Modeling exercise #1 is due in class on Wednesday; exercise #2 will be discussed in class.
Exam soon! If you haven't started to study, start now!
About Me
- DCChem
- I am Professor and Alfred Victor DuPont Chair in Chemistry at Dickinson College. My professional interests gravitate towards organotransitionmetal synthetic methodology, green chemistry, and the development of undergraduate organic chemistry labs.
13 comments:
Newman Projections??? aww I miss Orgo 1!!! Enjoy it while it lasts kids!!! You'll learn to love it!!
~An recent orgo survivor ;)
Oh! and a word of advice...watch The Amazing Race
ps.. I know it's "a" not "an" ...oops
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