Question

What are difference between aeromatic and aliphatic compounds?

Answer 1

Answer:

Property Aliphatic compounds Aromatic compounds

Structure In aliphatic compounds the Carbon compounds are linked to each other in a straight chain manner. In aromatic compounds the Carbon compounds are linked to each other in ring structure manner with conjugated pi electrons.

Huckel’ rule (4n+2 rule) These compounds does not follow Huckel’s rule. These compounds follow Huckel’s rule.

Odour No pleasant odour Pleasant odour

Flame test They burns with non sooty flame. They burns with sooty flame.

Carbon to hydrogen ratio More Less

Example Ethane, propane, butane…etc Benzene, Napthalene…etc

Answer 2

Benzene is the archetypical aromatic compound. It is planar, bond angles=120º, all carbon atoms in the ring are sp2 hybridized, and the pi-orbitals are occupied by 6 electrons. The aromatic heterocycle pyridine is similar to benzene, and is often used as a weak base for scavenging protons. Furan and pyrrole have heterocyclic five-membered rings, in which the heteroatom has at least one pair of non-bonding valence shell electrons. By hybridizing this heteroatom to a sp2 state, a p-orbital occupied by a pair of electrons and oriented parallel to the carbon p-orbitals is created. The resulting planar ring