| Outgoing Relation(s) |
| onium cation (CHEBI:50313) is a onium compound (CHEBI:50312) |
| Incoming Relation(s) |
| ammonium (CHEBI:28938) is a onium cation (CHEBI:50313) |
| arsonium (CHEBI:30272) is a onium cation (CHEBI:50313) |
| bismuthonium (CHEBI:30422) is a onium cation (CHEBI:50313) |
| bromonium (CHEBI:50316) is a onium cation (CHEBI:50313) |
| chloronium (CHEBI:50315) is a onium cation (CHEBI:50313) |
| fluoronium (CHEBI:50314) is a onium cation (CHEBI:50313) |
| iodonium (CHEBI:50317) is a onium cation (CHEBI:50313) |
| oxonium (CHEBI:29412) is a onium cation (CHEBI:50313) |
| phosphonium (CHEBI:30282) is a onium cation (CHEBI:50313) |
| selenonium (CHEBI:30485) is a onium cation (CHEBI:50313) |
| stibonium (CHEBI:30292) is a onium cation (CHEBI:50313) |
| sulfonium (CHEBI:30488) is a onium cation (CHEBI:50313) |