Title:  Cubane 
CAS Registry Number:  277-10-1 
CAS Name:  Pentacyclo[4.2.0.02,5.03,8.04,7]octane 
Molecular Formula:  C8H8 
Molecular Weight:  104.15 
Percent Composition:  C 92.26%, H 7.74% 
Literature References:  Prepn from bromocyclopentadienone dimer:  Eaton, Cole, J. Am. Chem. Soc. 86, 3157 (1964).  Structure:  Fleischer, ibid. 3889. 
Properties:  Rhombic crystals from methanol followed by sublimation at just above room temperature and atmospheric pressure, mp 130-131° (sealed capillary).  Thermally unstable.  Dec at 200°. 
Melting point:  mp 130-131° (sealed capillary)   |