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Heteroatom Chemistry publishes research on compounds containing main-group elements of groups 13 through 17 of the Periodic Table, with a fundamental focus on the reactivity of heteroatoms.

  • Six-membered rings with one heteroatom. The nomenclature used for the various monocyclic nitrogen-containing six-membered ring compounds is given below. Positions on the ring are shown for pyridine, Arabic numerals being preferred to Greek letters, although both systems are used.The pyridones are aromatic compounds because of contributions to the resonance hybrid from charged resonance forms.
  • Heteroatom is any atom structure that does not have hydrogen or carbon. The molecular structure of a Heteroatom misses carbon or hydrogen and is made of other non-carbon atoms. Examples are oxygen, nitrogen, sulfur and others.

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An atom other than carbon or hydrogen in the structure of an organic compound, especially in a heterocyclic compound.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


Heteroatomic (HeteroatomHeteroatomHeteroatom chemistryˈhɛtərəʊˌætəm) n
(Chemistry) chem any atom in the ring of a cyclic compound that is not a carbon atom
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

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chemical reactivity

  • In chemical compound: Functional groups

    …carbon or hydrogen (termed a heteroatom) is bonded to carbon. All heteroatoms have a greater or lesser attraction for electrons than does carbon. Thus, each bond between a carbon and a heteroatom is polar, and the degree of polarity depends on the difference between the electron-attracting properties of the two…

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heterocyclic compounds

Hybridization Of Heteroatoms

  • In heterocyclic compound

    …to the noncarbon atoms, or heteroatoms, in the ring. In their general structure, heterocyclic compounds resemble cyclic organic compounds that incorporate only carbon atoms in the rings—for example, cyclopropane (with a three-carbon-atom ring) or benzene (with a six-carbon-atom ring)—but the presence of the heteroatoms gives heterocyclic compounds physical and chemical…

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