Bicyclobutane

Bicyclobutane
Names
	Preferred IUPAC name Bicyclo[1.1.0]butane
Identifiers
CAS Number	157-33-5 ;
3D model (JSmol)	Interactive image;
ChemSpider	119751;
PubChem CID	135973;
UNII	YK26N2Z3VC ;
CompTox Dashboard (EPA)	DTXSID50166180 ;
	InChI InChI=1S/C4H6/c1-3-2-4(1)3/h3-4H,1-2H2 Key: LASLVGACQUUOEB-UHFFFAOYSA-N;
	SMILES C1C2C1C2;
Properties
Chemical formula	C4H6
Molar mass	54.092 g·mol−1
Appearance	colorless gas
Boiling point	8.3 ± 0.2 °C
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Bicyclo[1.1.0]butane is an organic compound with the formula C₄H₆. It is a bicyclic molecule consisting of two cis-fused cyclopropane rings, and is a colorless and easily condensed gas. Bicyclobutane is noted for being one of the most strained compounds that is isolatable on a large scale