Conformations  [ENDORSED]

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GabiFujita_1B
Posts: 17
Joined: Fri Sep 25, 2015 3:00 am

Conformations

Postby GabiFujita_1B » Fri Mar 11, 2016 4:27 pm

What are all the types of conformations of cyclopropanes?

Bryce Bentley 1l
Posts: 25
Joined: Fri Sep 25, 2015 3:00 am

Re: Conformations

Postby Bryce Bentley 1l » Fri Mar 11, 2016 4:39 pm

cyclopropane has only one conformation; it is only found with all of its carbon atoms in the same plane. That's why it is a very unstable molecule

KelseyKobayashi_2M
Posts: 21
Joined: Sat Jul 09, 2016 3:00 am

Re: Conformations

Postby KelseyKobayashi_2M » Mon Mar 13, 2017 10:27 am

Will we need to know/draw the most stable forms of molecules?

Desiree Martin 2A
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Joined: Fri Jul 22, 2016 3:00 am

Re: Conformations

Postby Desiree Martin 2A » Tue Mar 14, 2017 9:21 am

We need to understand which conformation represents which cycloalkane. For example, for cyclopropane, there is only one conformation being cyclopropane where all C's are on the same plane. For cyclobutane, the most stable conformation is the butterfly. For cyclopentane, the most stable conformation is the envelope. Finally, for cyclohexane, the most stable conformation is the chair. This is the only conformation we are expected to know how to draw.

Chem_Mod
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Re: Conformations  [ENDORSED]

Postby Chem_Mod » Tue Mar 14, 2017 12:25 pm

KelseyKobayashi_2M wrote:Will we need to know/draw the most stable forms of molecules?


For alkanes, using Newman projections, yes. As I did in class.

Also, as discussed in class, of the cycloalkanes, drawing cyclohexane's conformations is expected. This is why I am spending the most time on cyclohexane.

For the other cycloalkanes know the name of the most stable conformation. Students will not be expected to draw butterfly and envelope conformations.


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