"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.
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+
Descriptor ID |
D009861
|
MeSH Number(s) |
D02.675
|
Concept/Terms |
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Below are MeSH descriptors whose meaning is more general than "Onium Compounds".
Below are MeSH descriptors whose meaning is more specific than "Onium Compounds".
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