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Are these molecules exhibiting geometric isomerism (if so, which)?

I am doing some chem work and have come across the following questions, are these exhibiting geometric isomerism?

I get the feeling the right hand side is exhibiting cis and the left hand side is exhibiting trans isomerism.

Am I right?
(edited 10 years ago)
Original post by SomeGuy21
I am doing some chem work and have come across the following questions, are these exhibiting geometric isomerism?

I get the feeling the right hand side is exhibiting trans and the left hand side is exhibiting cis isomerism.

Am I right?


No, cis is when they're pointing in the same direction (think cister aka sister, they look the same).

So the RHS is cis and the LHS is trans.

This may be helpful.
http://en.wikipedia.org/wiki/Cis%E2%80%93trans_isomerism
Reply 2
Original post by Scorlibran
No, cis is when they're pointing in the same direction (think cister aka sister, they look the same).

So the RHS is cis and the LHS is trans.

This may be helpful.
http://en.wikipedia.org/wiki/Cis%E2%80%93trans_isomerism


Yeah, I noticed my mistake shortly after I typed it, just wasn't sure if it was experiencing geometric isomerism. =l
Wasn't sure if cycloalkenes could or not.

Thanks.
Original post by SomeGuy21
Yeah, I noticed my mistake shortly after I typed it, just wasn't sure if it was experiencing geometric isomerism. =l
Wasn't sure if cycloalkenes could or not.

Thanks.


I just remembered that all cyclic molecules can have this property due to the nature of their connectivity.

I made a short video to try to explain this.
[video="youtube;9tigesbxTHM"]https://www.youtube.com/watch?v=9tigesbxTHM[/video]
Original post by Scorlibran
I just remembered that all cyclic molecules can have this property due to the nature of their connectivity.

I made a short video to try to explain this.
[video="youtube;9tigesbxTHM"]https://www.youtube.com/watch?v=9tigesbxTHM[/video]


Very well explained! :yep:

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