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Concept
Parent structure
Summary
In chemistry, a parent structure is the structure of an unadorned ion or molecule from which derivatives can be visualized. Parent structures underpin systematic nomenclature and facilitate classification. Fundamental parent structures have one or no functional groups and often have various types of symmetry. Benzene () is a chemical itself consisting of a hexagonal ring of carbon atoms with a hydrogen atom attached to each, and is the parent of many derivatives that have substituent atoms or groups replacing one or more of the hydrogens. Some parents are rare or nonexistent themselves, as in the case of porphine, though many simple and complex derivatives are known.
File:Benzene circle.png|[[Benzene]] is the parent.
File:Toluene-vec.svg|[[Toluene]] is a derivative of benzene.
File:Porphyrin.svg|[[Porphine]] is the parent of [[porphyrins]].
File:PPIXtransH.png|[[Protoporphyrin IX]] is a natural derivative of the parent porphine.
File:H2octaethylporphyrin.png|[[Octaethylporphyri
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