ACD/Name

Table C-V Parent 'onium ions (not necessarily capable of independent existence), in order of decreasing preference for citation at the end of a name

Ion Parent cation Cation as prefix
Ammonium Ammonio-
Oxonium Oxonio-
Sulfonium Sulfonio-
Selenonium Selenonio-
Chloronium Chloronio-
Bromonium Bromonio-
Iodonium Iodonio-
Note: This Table lists also the prefixes required for Rules C-85.1, and C-87.1.

Example to Table C-V

Trimethylammonio


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