Bis(fulvalene)diiron

Bis(fulvalene)diiron is the organoiron complex with the formula (C₅H₄-C₅H₄)₂Fe₂. Structurally, the molecule consists of two ferrous centers sandwiched between fulvalene dianions. The compound is an orange solid with lower solubility in benzene than ferrocene. Its structure has been verified by X-ray crystallography.^[1] The compound has attracted some interest for its redox properties.^[2]

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Bis(fulvalene)diiron

Names
Other names Biferrocenylene
Identifiers
CAS Number	11105-90-1 Y
3D model (JSmol)	Interactive image
ChemSpider	10157150
PubChem CID	11984650
InChI InChI=1S/2C10H8.2Fe/c2*1-2-6-9(5-1)10-7-3-4-8-10;;/h2*1-8H;;/q-6;-2;; Key: RQVWSKGUQRKYKR-UHFFFAOYSA-N
SMILES C1=C[C-](C=C1)[C-]2C=CC=C2.[Fe+2].[Fe+2].C1=C[C-](C=C1)[C-]2C=CC=C2
Properties
Chemical formula	C20H16Fe2
Molar mass	368.038 g·mol−1
Appearance	orange solid
Density	1.76 g/cm3
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

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