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Topic: Isomers  (Read 2530 times)

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Offline Ter

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Isomers
« on: January 16, 2013, 10:13:42 PM »
Why doesn't this have isomers? Please explain it to me, thank you very much really!

Online Hunter2

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Re: Isomers
« Reply #1 on: January 17, 2013, 12:45:20 AM »
The molecule itself has no isomer. But if you exchange X with Y then you have the possibility of 3 isomers.

1,1 Di(X)-2,2 di(Y) Ethylene, cis-1,2 Di(X)-1,2 di(Y) Ethylene, trans-1,2 Di(X)-1,2 di(Y) Ethylene

Offline Borek

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Re: Isomers
« Reply #2 on: January 17, 2013, 03:54:46 AM »
[*:1]C([*:1])=C([*:2])[*:2]

What is an isomer? What kind of isomers do you think would be possible?
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Offline Ter

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Re: Isomers
« Reply #3 on: January 17, 2013, 10:35:53 AM »
From what I know, an isomer is the different structural arrangement of atoms within the molecule.

Since the atoms can 'move', then it can have isomers can't it? eg. X placed diagonally within the molecule like a trans isomer, I was thinking that the isomers would be cis and trans since the atoms can be moved.

Please correct me, I know I am wrong here but I really dont know why,

Offline Borek

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Re: Isomers
« Reply #4 on: January 17, 2013, 10:56:33 AM »
What do you mean by "atoms can move"? When you exchange X with Y (or R1 with R2) you will get a different molecule.
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Offline curiouscat

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Re: Isomers
« Reply #5 on: January 17, 2013, 12:03:28 PM »
The molecule itself has no isomer.

It does, I think. The ones you wrote.

Offline curiouscat

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Re: Isomers
« Reply #6 on: January 17, 2013, 12:04:30 PM »
What do you mean by "atoms can move"? When you exchange X with Y (or R1 with R2) you will get a different molecule.

Which is an isomer of the parent molecule.

Offline discodermolide

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Re: Isomers
« Reply #7 on: January 17, 2013, 12:05:51 PM »
Don't forget the plane of symmetry.
As drawn there is one trans isomer.
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