5: Chirality

Question 1

Same connectivity, different orientations

Answer 1

Stereoisomer

Question 2

Same on Both Sides

Answer 2

Achiral

Question 3

No plane symmetry

Answer 3

chiral

Question 4

Molecules that have 4 different substituents

Answer 4

enantiomers

Question 5

Four different groups are attached to one carbon (tetrahedral carbon)

Answer 5

Chiral Center

Question 6

Has Chiral Centers, but overall achiral

Answer 6

Meso

Question 7

Groups cannot not be superimposed = Different

Answer 7

Groups “different” if there is any non-conformational structural differenc

Question 8

Relative positions of all groups around the chiral center

Answer 8

R/S configuration

Question 9

Rule 1: The highest rank number is based on what and what is always the lowest

Answer 9

Atomic Number. Example O = 1, N = 2, CH3 = 3, H = 1.

Question 10

Rule 2: If a decision cant be made for the first atom…

Answer 10

the higher rank one is the one with the highest atomic # and then atomic mass for the substituents.

Question 11

Rule 3: double bonds…

Answer 11

same as single bonds. (Still four bonds)

Question 12

Starting R and S configuration.

Answer 12

Lowest Priority is pointed away from you. Then go in ascending order.

Question 13

Clockwise

Answer 13

R

Question 14

Counterclockwise

Answer 14

L

Question 15

stereoisomeric forms that are not mirror images

Answer 15

Diastereomers

Question 16

Prochirality

Answer 16

Molecules that are achiral but have the potential or can become chiral through a single change. R -> pro-R and S -> pro-S