Stereoisomerism

E-Z Isomerism

• Position of elements either side of a C=C bond
• E/trans - different sides
• Z/cis - same side 
• If joined by a C-C bond, elements can rotate around it.
• A C=C bond means that they're fixed in position, making them seperate compunds.

Optical Isomerism

• Occurs when 4 different elements attch to 1 carbon atom, so you can have 2 isomers which have the same elements but aren't identical
• Like a pair of shoes or hands, can't be superimposed
• Named Optical Isomers as they rotate…