2013 final #8c

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2013 final #8c

Postby kshalbi » Wed Mar 09, 2016 7:16 pm

How do you know this is chair just by looking at it?

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Re: 2013 final #8c

Postby Chem_Mod » Wed Mar 09, 2016 10:47 pm

Each newman projection has 2 carbons (you're staring down a C-C bond). When you add up the 2 carbons from the 2 newman projections with the 2 carbons you see connecting the projections, you get a total of 6 carbons. So it's a cyclohexane. Furthermore, you can see that one of the carbons connecting the projections is down while the carbon opposite to it is up, so it's puckered.

Another way to look at it is to imaging a chair, and imagine that you're staring at the chair such that four of the carbons are in a single plane. It should look like the picture you took.

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