Mesh term Onium Compounds
Browse to parent terms:Organic Chemicals
Description
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+Browse to child terms:
Quaternary Ammonium Compounds
Sulfonium Compounds
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