# ferrocenium

> English word · Noun

## Definitions
1. The univalent cation [Fe(C₅H₅)₂]⁺ obtained by the oxidation of ferrocene

## Etymology
From ferrocene + -ium.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/ferrocenium