The differences between aliphatic and aromatic hydrocarbon

Question

about the reaction and many more...

Answer 1

Aliphatic hydrocarbon: another name for an alkane

Answer 2

In aliphatic compounds, carbon atoms can be joined together in straight chains, branched chains, or non-aromatic rings (in which case they are called alicyclic). They can be joined by single bonds (alkanes), double bonds (alkenes), or triple bonds (alkynes). Besides hydrogen, other elements can be bound to the carbon chain, the most common being oxygen, nitrogen, sulfur, and chlorine.

Aromaticity is a chemical property in which a conjugated ring of unsaturated bonds, lone pairs, or empty orbitals exhibit a stabilization stronger than would be expected by the stabilization of conjugation alone. It can also be considered a manifestation of cyclic delocalization and of resonance.

An aromatic compound contains a set of covalently-bound atoms with specific characteristics:

A delocalized conjugated π system, most commonly an arrangement of alternating single and double bonds.

Coplanar structure, with all the contributing atoms in the same plane.

Contributing atoms arranged in one or more rings.

A number of π delocalized electrons that is even, but not a multiple of 4. That is, 4n + 2 number of π electrons, where n=0, 1, 2, 3, and so on. This is known as Hückel's Rule.

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Answer 3

aromatic hydrocarbons differ by aliphatic hydrocarbons in contain of so called "aromatic core or aromatic electrons" means delocalizated electrons, electrons that are common for all C atoms. In aliphatic hydrocarbons all electrons are localizated betwee C-C or C-H bonds.

typical reactions for aromatic hydrocarbons is electrophile aromatic substitution, for aliphatic ones depending of the type is substitution for those with C-C single bond, addition for those with C=C or triple bond. Adiition is not typical reaction for aromatic hydrocarbons.

Answer 4

1-Aliphatic hydrocarbons are in a straight chain while aromatic in a ring with conjugated system of bonds

2-Compounds related to Aliphatic hydrocarbons are called allyl and the second one are aryl

3-In aliphatic hydrocarbons the single double and triple bond can exist anywhere, where as in aromatic they should form a conjugate system that is alternate single and multiple bond so that electrons can be easily delocalized

4-Aliphatic hydrocarbons have localized electrons where as the other one has delocalized(that is electron can move from one bond to other)

5-Aliphatic hydrocarbons, if saturated, give substitution reaction but if unsaturated give addition reactions more easily as compared to aromatic hydrocarbons which are more liable to substitution reactions rather than addition although they are always unsaturated because they(aromatic)don't want to loose their cyclic conjugated system

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