Stereochemistry

Question 1

Achiral

Answer 1

Symmetric and super imposable

Question 2

Chiral

Answer 2

Asymmetric; has 4 diff. substituents, non super imposable

Question 3

Stereo isomers

Answer 3

Same formula, same connectivity

Question 4

Constitutional isomers

Answer 4

Same formula, different bond connectivity

Question 5

Stereo center

Answer 5

The center atom that has atoms connected to it (usually C with 4 atoms)

Question 6

Enantiomers

Answer 6

Mirror image, non super imposable, no internal plane of symmetry; all chiral centers changed configuration when comparing to one stereo isomer

Question 7

Disasterisomer

Answer 7

Same formula, different connectivity; non super imposable but not mirror images; only one chiral center changed, not all when comparing to another stereo isomer

Question 8

Meso compounds

Answer 8

Two stereo centers; has an internal plane of symmetry and a symmetry point; achiral

Question 9

How do you know how many stereoisomers does a molecule have?

Answer 9

of stereoisomers = 2^n

n = number of stereo centers

Question 10

Cis

Answer 10

A stereoisomer where two of the same atoms/molecules are on the same side

Question 11

Trans

Answer 11

A stereoisomer where there are two of the same atoms/molecules on different sides

Question 12

Are meso compounds identical?

Answer 12

Yes

Question 13

What do you call two molecules that are symmetrical, mirror images and all their chiral centers are different from one another?

Answer 13

Meso compounds

Question 14

What do you call two molecules that are asymmetric, mirror images, and all of their chiral centers are different from one another?

Answer 14

Enantiomers

Question 15

Are all diastereoisomers cis and trans?

Answer 15

No