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					A List of Aromatic Compounds Examples
Before we explore the aromatic compounds examples, we really need to understand what
aromatic compounds are. Aromatic compounds are simply any compound related to benzene.
However, in other cases, some compounds will be termed aromatic even when they have no
element of benzene in them. There are several aromatic compounds in existence.

The Aromatic Compounds Examples
The simplest example of an aromatic compound is pyridine, C5H5N. It bears a great similarity
with benzene in terms of its structure.




There are some aromatic compounds which have a heteroatom. They have an element other than
the usual C and H and they have a five-member ring as well.

                                     It is important to find out what these two elements have in
                                     common with pyredine and benzene that gives them their
                                     aromatic properties. These two compounds contain two
                                     double bonds. Hence, there are 4 p orbital electrons that are
                                     rightly perpendicular to the ring of the compound. There are 6
electrons in these p orbital electrons. In analyzing the proper orientation of lone pairs, we find
out that electrons are not in any way part of the loop of electrons. This is a principle
characteristic of the aromatic compounds.

The figure below shows the bonding and also the unbonded p optical electrons in pyrrole,
pyredine and furan. There is a clear pattern here which we may be able to see. There is a loop of
6 electrons that is actually overlapping the p orbitals. Hence we may be tempted to qualify as a
condition for aromaticity. However, we should also consider other forms of structures as well.

Huckel’s Rule is also very important in determining aromaticity in any type of compound. The
rule says that the number of electrons in an aromatic compound should be 4n+2, where n is a
whole number. The other rule is that there should be a planar array of electrons that is cyclic in
nature. The examples above include compounds where 6 electrons are delocalized over the other
5 orbitals.

The first group that contributes to the aromatic compounds examples is the mono-substituted
compounds which include nitrobenzene, chlorobenzene, bromobenzene, toluene, cumene,
aniline, phenol, anisole, benzoic acid, benzelsunifonic acid, benzaldehyde, benzonitrile,
acetophenone and styrene. They possess some little variation in their structures but they are
allderivatives of benzene.
The second group is that of the disubstituted compounds. These are actually the derivatives of
benzene but they have special names. In other cases, isomers are possible. They have very
special designations that have been adapted by the IUPAC for the sake of world uniformity.
They include 1,2-disubstituted ortho, o-dichlorobenzene, o-nitrotoluene, 1,3-disubstituted meta,
m-dibromobenzene, m-chlorophenol, 1,4-disubstituted para, p-fluoroni tr obenzene and p-
nitroaniline.

The last group of these aromatic compounds consists of the more highly substituted compounds
which have more than two substituents. The substituent of carbon that normally corresponds to
the special name of the compound is assigned the number 1. This assists in ensuring that proper
alphabetical order is observed. Examples of these aromatic compounds include 2,4,6-
trinitrophenol, 2,4,6-trinitrotoluene and 4-hydroxy-3-methoxybenzaldehyde.

An All-inclusive List of Aromatic Compounds Examples

There are several ways of classifying aromatic compounds examples due to the different forms
of reactions and bonding involved in order for them to be formed. However, they all bear the
same end characteristics that are possessed by aromatic compounds. For instance, we have the
polyaromatic hydrocarbons. They are referred to as polycyclic aromatic hydrocarbons or the
polynuclear aromatic hydrocarbons. They are atmospheric pollutants and contain no
heteroatoms, neither do they carry any substituents. Naphthalene is one such example which is
known to occur in oil, coal and tar deposits which are normally produced as of the burning fuel.

Contents of polyaromatic compounds have also been found in cooked foods such as meat cooked
in very temperatures such as grilling, barbecuing or even the smoked fish. An exhaustive list of
these compounds consists of acenaphthene, acenaphthylene, anthracene, benz(a)anthracene,
benzo(a)pyrene, benzo(e)pyrene, benzo(b)fluoroanthene, benzo(ghi)perylene,
benzo(i)fluoroanthene, benzo(k)fluoranthene, chrysene, dibenz(a, h)anthracene, fluoranthene,
fluorine, indeno(1,2,3-cd)pyrene, phenanthrene and pyrene.

There are some aromatic compounds classified above that may be dangerous to human health.
However, these could generally be very few because aromatic compounds form the major
content of an endless list of aromatic plants and herbs. These produce a pleasant aroma that is
used to freshen the air and purify the environment. Many of them are also used to cure many
human complexities such as headaches, cardiovascular problems, nausea and many others.

The list containing aromatic compounds examples is simply endless. Others include neophyl
chloride, nitrosobenzene, vanillin, deltic acid, cycrimine, irone, isovanillin, hydramethylnon,
carbazole, carbenicillin, bromoanisole, benzylamine, graphene, halogenoarene, thyroxine,
transfluthrin, trichlorobenzene, thyrene oxide, resmethrin, phenacylphenformin, phenyl azide,
diarylethene, aloin, anethole, aspartame, biperidin, bromobenzene, bromoanisole, triphos, usnic
acid, irone, pargyline, cupferron among others. It is important to have a glimpse of the aromatic
compounds examples because it will help you to identify the difference between those that are
toxic and those that can be used as drugs.

This article was about aromatic compounds examples.

				
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posted:3/2/2012
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