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Onium Compounds

"Onium Compounds" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus, MeSH (Medical Subject Headings). Descriptors are arranged in a hierarchical structure, which enables searching at various levels of specificity.

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Ions with the suffix -onium, indicating cations with coordination number 4 of the type RxA+ which are analogous to QUATERNARY AMMONIUM COMPOUNDS (H4N+). Ions include phosphonium R4P+, oxonium R3O+, sulfonium R3S+, chloronium R2Cl+


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This graph shows the total number of publications written about "Onium Compounds" by people in this website by year, and whether "Onium Compounds" was a major or minor topic of these publications.
Bar chart showing 3 publications over 3 distinct years, with a maximum of 1 publications in 2004 and 2012 and 2015
To see the data from this visualization as text, click here.
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