An aromatic hydrocarbon or arene (or sometimes aryl hydrocarbon) is a hydrocarbon with alternating double and single bonds between carbon atoms forming rings. The term 'aromatic' was assigned before the physical mechanism determining aromaticity was discovered, and was derived from the fact that many of the compounds have a sweet scent. The configuration of six carbon atoms in aromatic compounds is known as a benzene ring, after the simplest possible such hydrocarbon, benzene. Aromatic hydrocarbons can be monocyclic (MAH) or polycyclic (PAH).
Some non-benzene-based compounds called heteroarenes, which follow Hückel's rule, are also aromatic compounds. In these compounds, at least one carbon atom is replaced by one of the heteroatoms oxygen, nitrogen, or sulfur. Examples of non-benzene compounds with aromatic properties are furan, a heterocyclic compound with a five-membered ring that includes an oxygen atom, and pyridine, a heterocyclic compound with a six-membered ring containing one nitrogen atom.
Other articles related to "aromatic hydrocarbon, aromatic hydrocarbons, aromatic":
... Polycyclic aromatic hydrocarbons 2 rings Azulene Naphthalene 1-Methylnaphthalene Sapotalin 3 rings Acenaphthene Acenaphthylene Anthracene Fluorene Phenalene Phenanthrene 4 ... protein Modified starch Nitrosamines Polycyclic aromatic hydrocarbon Shortening Trans fat Miscellaneous Curing (food preservation) Foodborne illness Food marketing Food politics Food ...
... and anthracene, which both contain three fused aromatic rings ... The name comes from benzene, an aromatic hydrocarbon with a single, six-membered ring ... PAHs containing up to six fused aromatic rings are often known as "small" PAHs, and those containing more than six aromatic rings are called "large" PAHs ...
Famous quotes containing the word aromatic:
“Die of a rose in aromatic pain?”
—Alexander Pope (16881744)