Illustrated Glossary of Organic Chemistry

Ferrocene: An organometallic compound featuring Fe²⁺ cation bonded to each carbon of two cyclopentadienyl anion (Cp) rings. This bonding is shown as a line between the iron atom and the center of the ring. Sometimes called a "sandwich compound" because of its structure: an Fe²⁺ cation sandwiched between two slices of cyclopentadienyl anion bread.

Molecular Structure of Ferrocene

		Cp2Fe
Skeletal structure		Abbreviated structure		Ball and spoke		Space filling model