An aromatic hydrocarbon or arena (sometimes also called aryl hydrocarbon) is a hydrocarbon with a single bond or a double bond, and between carbon atoms. Configuration 6 carbon atoms in an aromatic compound called benzene rings. Aromatic hydrocarbons can be monocyclic or polycyclic. Aromatic
hydrocarbons, usually containing rings of carbon atoms are very
stable
Some aromatic compounds that are not called heteroarena benzene derivatives, these compounds follow Hückel Rule. In these compounds, at least one carbon atom is replaced by another atom, such as oxygen, nitrogen, or sulfur. One contohn compound is furan, a heterocyclic ring compound having 5 members, one oxygen atom. Another example is pyridine, a heterocyclic ring compound with 6 members, one nitrogen atom.
reaction arena
Arena is a reactant in many organic reactions.
aromatic substitution
In aromatic substitution, 1 substituents on the ring arena (usually hydrogen) will be replaced with other substituents. 2 main types are electrophilic aromatic substitution (active electrophile reagent) and nucleophilic aromatic substitution (reagennya nucleophile). In the radical-nucleophilic aromatic substitution, a radical form of active reagents. One example is the nitration of salicylic acid:
Nitration of salicylic acid
couplings
At couplings, metal will catalyze the coupling between the two radical fragments formal. The results are usually obtained from the coupling reaction is the formation of new carbon-carbon bonds, for example alkilarena, vinyl arena, biraril, the carbon-nitrogen (aniline) or a carbon-oxygen bond new. An example is the arylation of perfluorobenzena
Some aromatic compounds that are not called heteroarena benzene derivatives, these compounds follow Hückel Rule. In these compounds, at least one carbon atom is replaced by another atom, such as oxygen, nitrogen, or sulfur. One contohn compound is furan, a heterocyclic ring compound having 5 members, one oxygen atom. Another example is pyridine, a heterocyclic ring compound with 6 members, one nitrogen atom.
reaction arena
Arena is a reactant in many organic reactions.
aromatic substitution
In aromatic substitution, 1 substituents on the ring arena (usually hydrogen) will be replaced with other substituents. 2 main types are electrophilic aromatic substitution (active electrophile reagent) and nucleophilic aromatic substitution (reagennya nucleophile). In the radical-nucleophilic aromatic substitution, a radical form of active reagents. One example is the nitration of salicylic acid:
Nitration of salicylic acid
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COUPLINGS
At couplings, metal will catalyze the coupling between the two radical fragments formal. The results are usually obtained from the coupling reaction is the formation of new carbon-carbon bonds, for example alkilarena, vinyl arena, biraril, the carbon-nitrogen (aniline) or a carbon-oxygen bond new. An example is the arylation of perfluorobenzena
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BalasHapusQuestion: aromatic hydrocarbons, usually containing rings of carbon atoms are very stable. how the characteristics of the ring carbon atoms are stable?
BalasHapushii citraaaa,, i try to answer. The carbon atoms form four pairs of bonding electrons with other atoms, thus forming oktetnya be complete without a pair of free electrons. As a result, the carbon atoms are very stable compounds.
Hapusok cit
HapusI will try to answer your question, if you ask me it is stable because the carbon ring carbon that shaped his sklik and pi is the same
ring carbon atom is stable that meets the rules Huckle. is an aromatic compound to be flat, monocyclic (one ring) needs to have as many pi electrons 4N + 2, where n is an integer. According to the Hückel rule, a ring with pi electrons as 2,6,10 or 14 can be aromatic, but the ring with 8 or 12 pi electrons, can not be. Siklooktatetraena (with 8 electrons pi) does not comply with Hückel rule for aromaticity.Why the 6 or 10 pi electrons are aromatic, whereas 8 pi electrons are not? In order to be aromatic, all pi electrons must be paired, so it is possible overlapping (overlapping) resulting in optimal delocalization perfect.
BalasHapusThe carbon atom has an atomic number of 6. In the carbon atoms in the periodic system is in group IVA period 2. Carbon atom configuration is as follows: 6C = 2.4. Based on the configuration, the carbon atom has four outer electrons (valence electrons). In order elektronya stable arrangement in accordance with the rules of octets (has 8 outer electrons), the carbon atom requires four electrons. So that the carbon atoms can form four covalent bonds.
BalasHapusIn persenyawaannya, carbon atoms form four pairs of bonding electrons with other atoms, thus forming oktetnya be complete without a pair of free electrons. As a result, the carbon atoms are very stable compounds.