Lesson plan
Parent structure
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:Protoporphyrin IX neutral.svg|Protoporphyrin IX is a natural derivative of the parent porphine. File:H2octaethylporphyrin.png|Octaethylporphyrin is a synthetic derivative of the parent porphine.
Article 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:Protoporphyrin IX neutral.svg|Protoporphyrin IX is a natural derivative of the parent porphine. File:H2octaethylporphyrin.png|Octaethylporphyrin is a synthetic derivative of the parent porphine.
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Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
Bibliography
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Key claims and bibliography are generated from the same tracked claims and sources as the article page.