Prismane

Prismane
Names
	Preferred IUPAC name Tetracyclo[2.2.0.02,6.03,5]hexane
Identifiers
CAS Number	650-42-0 [PubChem];
3D model (JSmol)	Interactive image;
ChemSpider	16736515 ;
PubChem CID	12305738;
CompTox Dashboard (EPA)	DTXSID90486733 ;
	InChI InChI=1S/C6H6/c1-2-3(1)6-4(1)5(2)6/h1-6H Key: RCJOMOPNGOSMJU-UHFFFAOYSA-N ; InChI=1/C6H6/c1-2-3(1)6-4(1)5(2)6/h1-6H Key: RCJOMOPNGOSMJU-UHFFFAOYAA;
	SMILES C12C3C1C4C2C34;
Properties
Chemical formula	C6H6
Molar mass	78.114 g·mol−1
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Prismane or Ladenburg benzene is a polycyclic hydrocarbon with the formula C₆H₆. It is an isomer of benzene, specifically a valence isomer. Prismane is far less stable than benzene. The carbon (and hydrogen) atoms of the prismane molecule are arranged in the shape of a six-atom triangular prism—this compound is the parent and simplest member of the prismanes class of molecules. Albert Ladenburg proposed this structure for the compound now known as benzene. The compound was not synthesized until 1973.