13.2 Stereoisomerism

Question 1

Stereoisomers

Answer 1

Isomers with the same structural formula but a different arrangement of the atoms in space.

Question 2

What are the two types of Isomerism

Answer 2

E/Z isomerism - Only occurs with C=C bonds
Optical isomerism - Can also occur with various compounds with no functional groups.

Question 3

What is the cause of stereoisomerism in Alkenes?

Answer 3

The restrictions of rotation about the double bond.

Question 4

Conditions for E/Z Isomerism

Answer 4

C=C double bond
Different groups attached to each other carbon atom of the double bond.

Question 5

What are Cis-Trans isomers?

Answer 5

They are E/Z isomers in which one of the attached groups on each carbon atom of the double bond must be Hydrogen

Question 6

What is a cis and Trans isomer?

Answer 6

Cis - Is a E isomer - Hydrogens On the same side
Trans - Is a Z isomer - Hydrogens opposite (diagonal)

Question 7

Cahn-Ingold Prelog Rules

Answer 7

-The higher the atomic number of the Atom the higher priority
Z Isomer - if the higher priority are on the same side
E Isomer - if the higher priority are on Diagonally opposite sides.