Encyclopedia > Aromatic compound

  Article Content

Aromatic compound

Aromatic compounds are compounds containing a planar set of atoms that are (in the classical sense) connected by single and double bonds alternating in a system of one or more closed rings. The most famous such compound is benzene.

In modern terminology, they can be described as compounds in which a continuous, closed system of rings contains separate sets of sigma and pi electrons. The atomic orbitals forming the sigma system are sp2 hybridized[?], and those forming the pi system are pure p orbitals. The Hückel "4n+2" rule can be used to predict when aromatic behavior exists.

Properties Of Aromatic Compounds

  1. They have closed congugation.
  2. The Carbon Atoms are sp2 Hybrid,and have a planar structure.
  3. The Carbon-Hydrogen ratio is very small.
  4. They burn with a yellow sooty flame because of the low carbon-hydrogen ratio.
  5. They Undergo Electrophilic substitution reactions unlike Aliphatic Compounds which undergo Nucleophilic substitution reactions.

All Wikipedia text is available under the terms of the GNU Free Documentation License

  Search Encyclopedia

Search over one million articles, find something about almost anything!
  Featured Article
East Marion, New York

... of it is land and 0.3 km² (0.1 mi²) of it is water. The total area is 5.83% water. Demographics As of the census of 2000, there are 756 people, 329 ...

This page was created in 35 ms