|Jmol-3D images||Image 1
|Molar mass||260.37 g mol−1|
Pagodane (an isomer of dodecahedrane)
(what is: / ?)|
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Dodecahedrane is a chemical compound (C20H20) first synthesised by Leo Paquette of Ohio State University in 1982, primarily for the "aesthetically pleasing symmetry of the dodecahedral framework".
In this molecule, each vertex is a carbon atom that bonds to three neighbouring carbon atoms. The 108° angle of each regular pentagon is close to the ideal bond angle of 109.5° for an sp3 hybridised atom. Each carbon atom is bonded to a hydrogen atom as well. The molecule, like fullerene, has Ih symmetry, evidenced by its proton NMR spectrum in which all hydrogen atoms appear at a single chemical shift of 3.38 ppm. Dodecahedrane is one of the platonic hydrocarbons, the others being cubane and tetrahedrane, and does not occur in nature.