Another possible constitutionl isomer?

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Peter2715
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Joined: Fri Sep 25, 2015 3:00 am

Another possible constitutionl isomer?

Postby Peter2715 » Sat Feb 27, 2016 11:32 pm

I drew in another potential constitutional isomer to the right of the book answers on number 1.23, can someone explain why this does not count as an answer? Why can't the double bond be at the end right before the substituent?

See image.
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I drew in another potential constitutional isomer to the right on number 1.23, can someone explain why this does not count as an answer?

Chem_Mod
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Re: Another possible constitutionl isomer?

Postby Chem_Mod » Sun Feb 28, 2016 12:01 am

Can you please provide a picture of what you are talking about. What you said is a little vague.

Cindy Chen_2I
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Joined: Wed Nov 18, 2015 3:00 am

Re: Another possible constitutionl isomer?

Postby Cindy Chen_2I » Sun Feb 28, 2016 12:09 am

What you draw is the same isomer as the one right next to it.
If you try to name it, you'll see that they're both named 2-Methyl-1-butene

Peter2715
Posts: 20
Joined: Fri Sep 25, 2015 3:00 am

Re: Another possible constitutionl isomer?

Postby Peter2715 » Sun Feb 28, 2016 12:12 am

Cindy Chen_2I wrote:What you draw is the same isomer as the one right next to it.
If you try to name it, you'll see that they're both named 2-Methyl-1-butene


I do see that now, since that is the case, could my drawing potentially be described as geometric isomer though? Would it be trans (E)?

Cindy Chen_2I
Posts: 43
Joined: Wed Nov 18, 2015 3:00 am

Re: Another possible constitutionl isomer?

Postby Cindy Chen_2I » Mon Feb 29, 2016 6:53 pm

No it's still the same thing because one side of the double bond is attached to two Hs. So there would be no cis or trans in this case.
Basically you're just rotating the molecule.


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