Housane

Housane
Names
	Preferred IUPAC name Bicyclo[2.1.0]pentane
Identifiers
CAS Number	185-94-4;
3D model (JSmol)	Interactive image;
ChemSpider	8747;
PubChem CID	9101;
	InChI InChI=1S/C5H8/c1-2-5-3-4(1)5/h4-5H,1-3H2 Key: MHLPKAGDPWUOOT-UHFFFAOYSA-N; InChI=1/C5H8/c1-2-5-3-4(1)5/h4-5H,1-3H2 Key: MHLPKAGDPWUOOT-UHFFFAOYAN;
	SMILES C1C2CCC12;
Properties
Chemical formula	C5H8
Molar mass	68.119 g·mol−1
Appearance	colorless liquid
Boiling point	45.5 ′C
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Housane or bicyclo[2.1.0]pentane is a saturated cycloalkane with the formula C₅H₈. It is a colorless volatile liquid at room temperature. It was named "housane" because of its shape. Structurally, the molecule consists of cyclopropane fused to cyclobutane. The synthesis of molecules containing multiple strained rings, such as housane, is a traditional endeavor in synthetic organic chemistry.

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