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Topic: When two geometric isomers can be called Diastereomers?  (Read 15683 times)

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Offline Ahmed Abdullah

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When two geometric isomers can be called Diastereomers?
« on: May 20, 2008, 12:55:01 AM »
We know Diastereomers are isomers which are not mirror image of each other. But every geometric isomer (without any chiral center) is  mirror image of itself. Any two geometric isomers are not mirror image of each other, so any two geometric isomers should be diastereomers of each other. Is it right?
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Offline macman104

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Re: When two geometric isomers can be called Diastereomers?
« Reply #1 on: May 20, 2008, 02:17:12 AM »
Correct.
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Offline Ahmed Abdullah

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Re: When two geometric isomers can be called Diastereomers?
« Reply #2 on: May 20, 2008, 02:58:28 AM »
Quote from: macman104 on May 20, 2008, 02:17:12 AM
Correct.
So you mean the isomers below are cis and trans AND diastereomers.

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Offline macman104

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Re: When two geometric isomers can be called Diastereomers?
« Reply #3 on: May 20, 2008, 03:01:58 AM »
Cis/Trans isomers are a type of diastereomer.

Take a look at the image at the wikipedia page:

http://en.wikipedia.org/wiki/Isomer
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