Cis/Trans & E/ Z!!!

[Ocean5]

Guys do you know when do we use Eand Z and when Cis and trans?

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[Flipper405]

E and Z are more flexible for stereochemical descriptions; cis and trans is specifically for situations with two substituents.

 

[Ocean5]

E and Z are more flexible for stereochemical descriptions; cis and trans is specifically for situations with two substituents.

Could you please explain little more, sorry for the trouble, but I have difficulty understanding what this means. , thanks

Could any one give an example, of situations that we should use cis/trans and other circum. that we should use E/ Z?

 

[Dentalicous1234]

use e/z when you have a POLYsubstitued compound. so the alkene has more than just Cl and H as its substituents it has like a butyl and a bromo and H and propyl grp then its e/z.

hope this helps

 

[diesels]

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

 

[dentalgirl101]

Cis and Trans is typically when the substituents on C1 and C2 across the double bond are the same, E and Z are cis like and trans like meaning that the substituents are not the same and the higher atomic number will determine the conformation.