In acidic media, the oxonium functional group produced by protonating an alcohol can be a leaving group in the E2 elimination reaction. The product is an alkene. ... Other hydrocarbon oxonium ions are formed by protonation or alkylation of alcohols or ethers (R−C−−R1R2).
Why is oxonium ion unstable?
Oxonium ions contain a positively charged oxygen atom that forms three bonds rather than the usual two it forms when it is neutral. Usually oxonium ions do not exist for long, and those that can be isolated are often highly reactive salts that can be used as alkylating agents.
What is the difference between hydronium and oxonium?
In context|inorganic chemistry|lang=en terms the difference between hydronium and oxonium is that hydronium is (inorganic chemistry) the hydrated hydrogen ion, h 3 o + while oxonium is (inorganic chemistry) any univalent oxygen cation derived from water, the simplest of which is the hydronium ion (h 3 o + ).
