Enium ion
From Mass Spec Terms
| DRAFT DEFINITION | 
| Enium ion | 
|---|
| Positively charged lower-valency (lower-coordination) ion of the nonmetallic elements. More common types are the carbenium, oxenium, sulfenium, nitrenium, phosphenium, and halenium ions. A classical example is the methenium ion CH3+ (or the methyl cation). | 
| Considered between 2004 and 2006 but not included in the 2006 PAC submission | 
| This is an unofficial draft definition presented for information and comment. | 
