Friday
May 29, 2015

Homework Help: chemistry

Posted by Kellie on Thursday, March 29, 2007 at 11:34pm.

I am totally lost on this one.

1,2,2-trimethylcyclopentane

I think I have to draw the cyclopentane shape with the single bond going straight CH3 and I am lost from there.

Draw the cyclopentane as a 5-cornered box.
C-C
|  |
C  C
 \  /
  C
Start numbering with ANY carbon atom you choose. Put a -CH3 group on C #1, and two CH3 groups on C #2. Then fill in H atoms on all C atoms to make a total of four bonds for each C atom.
I hope this drawing is good enough. It it can't be interpreted, I will try again.

I think that looks close enough for you to know what I am talking about.

Is this what it should look like or close enough to it

CH-CH-CH3
| |
CH CH-CH3-CH3
\ /
CH



Difficult to draw in text is it not.

CH2-CH2-CH2-CH(CH3)-C(CH3)2
|____________________|

It was a problem that early printers of organic chemistry texts had to cope with.

Does this representation help?

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