Aromatic Compounds

Question 1

Aliphatic compounds

Answer 1

Organic compounds that are not aromatic
(can be straight-chain, branched, or cyclic).

Question 2

Cyclic compounds

Answer 2

Compounds where atoms are connected in a ring shape.

Question 3

Aromatic compounds

Answer 3

Cyclic, planar compounds with delocalized π electrons that follow the 4n + 2 π electron rule (Hückel’s rule), where n is an integer.

Question 4

Anti-aromatic compounds

Answer 4

Cyclic, planar compounds with 4n π electrons (where n is an integer) — highly unstable due to electron repulsion.

Question 5

Non-aromatic compounds

Answer 5

All compounds that break any or every rule for it to be considered as an aromatic or anti-aromatic compound.

Question 6

Requirements for aromaticity

Answer 6

✓ Must be cyclic
✓ Must be planar (no sp3 . Tetrahedral)
✓ Must be fully conjugated (alternating single and double bonds)
✓ Must follow the 4n + 2 π electron rule

Question 7

Requirements for anti-aromaticity

Answer 7

✓ Must be cyclic
✓ Must be planar
✓ Must be fully conjugated
✓ Must follow the 4n π electron rule

Question 8

Is cyclohexane aromatic?

Answer 8

No. Cyclohexane is non-aromatic because it is not planar and conjugated.

Question 9

What is a non-aromatic compound?

Answer 9

• A non-aromatic compound is any cyclic compound that:
• Does not meet aromaticity conditions (planarity, conjugation, and 4n+2 π electrons),
• And is not anti-aromatic (which fails the 4n+2 rule but meets the others).

Question 10

Alicyclic compounds

Answer 10

Cyclic aliphatic compounds

Question 11

Are aromatic compounds stable?

Answer 11

Yes

Question 12

How many pi electrons are there in each pi bond?

Answer 12

Two

Question 13

Are anti-aromatic compounds stable?

Answer 13

No

Question 14

Do aromatic compounds have delocalized electrons?

Answer 14

Yes

Question 15

What is resonance?

Answer 15

An average between the different structures we can draw

Question 16

Common name for methyl benzene

Answer 16

Toluene

Question 17

Benzene with a alcohol group name

Answer 17

Phenol

Question 18

Benzene ring with a carboxylic acid group name

Answer 18

Benzoic acid

Question 19

OMP

Answer 19

Ortho
Meta
Para

Question 20

What is the name of the benzene functional group attached to other organic compounds?

Answer 20

Phenyl

Question 21

What is an Aryl group?

Answer 21

Any functional group derived from an aromatic ring

Question 22

Answer 22

Naphthalene

Question 23

Answer 23

Biphenyl