Triafulvalene

Triafulvalene
Names
	Preferred IUPAC name [1,1′-Bi(cyclopropylidene)]-2,2′-diene
	Other names 1,1′-Bi(cycloprop-2-en-1-ylidene)
Identifiers
CAS Number	1608-08-8 ;
3D model (JSmol)	Interactive image;
ChemSpider	35807295;
PubChem CID	86179345;
	InChI InChI=1S/C6H4/c1-2-5(1)6-3-4-6/h1-4H Key: MRCIUZQRSIHAMG-UHFFFAOYSA-N;
	SMILES C=1C(C=1)=C2C=C2;
Properties
Chemical formula	C6H4
Molar mass	76.098 g·mol−1
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Triafulvalene or cyclopropenylidenecyclopropene is a fulvalene hydrocarbon with chemical formula C₆H₄, composed of two linked cyclopropene rings. Triafulvalene has never been isolated, since it can decompose via an isodesmic reaction. However, this molecule is of theoretical significance for theoretical organic chemists, and its structure, stability, and spectral properties are well-studied.

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