Theory:Nomenclature:E-Z Convention

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E-Z Convention

Rule #1: Write down any modifier attached to one of the double-bonded carbon atoms. Then use a separate modifier for the other attached group, using E in the subscript before the central character if the two groups are of the E (trans) isomer and using Z if the the two groups are of the Z (cis) isomer.


The Z- isomer. Can you guess what the E- isomer would look like?

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