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Geometric isomers as line structures

Posted: Sun Mar 12, 2017 6:50 pm
by Alina_Mitchell_2C
How can you tell whether two geometric isomers are cis or trans based on their line structures alone?

Re: Geometric isomers as line structures

Posted: Sun Mar 12, 2017 7:55 pm
by Shruti Amin 1E
Hi!!!!!!!!!!!!!!!!!!!!!!!!

If the two highest priority groups are on the same side, then it's a cis geometric isomer.

If the two highest priority groups are on opposite sides, then it is a trans geometric isomer.

Page 16 in the Green textbook thingy at the bottom.

Re: Geometric isomers as line structures

Posted: Sun Mar 12, 2017 7:59 pm
by Caitlin Dillon 3G
Also, remember that Z groups are on zee zame zide!!!

Re: Geometric isomers as line structures

Posted: Sun Mar 12, 2017 8:35 pm
by Catherine Liu 1D
Same, I am confused on this too. Does CH2 have higher priority over CH3?

Re: Geometric isomers as line structures

Posted: Sun Mar 12, 2017 9:05 pm
by Alina_Mitchell_2C
yes, but in a line structure, how do you know what is on the same side?