for transition metals, generating metallacarboranes, which are carboranes containing one or more transition metal or main group metal atoms in the cage framework. Most famous are the dicarbollide, complexes with the formula M[C2B9H11]2-. Research Dicarbollide complexes have been evaluated for many applications for many years, but commercial applications are rare. The bis(dicarbollide) [Co(C2B9H11)2]− has been used as a precipitant for removal of 137Cs+ from radiowastes. The medical applications of carboranes have been explored. C-functionalized carboranes represent a source of boron for boron neutron capture therapy. The compound H(CHB11Cl11) is a superacid, forming an isolable salt with protonated benzene, C6H. It protonates fullerene, C60. See also Azaborane Heteroborane Metallacarboranes Organoboron chemistry Dicarbollide Carborane superacid References External links Material Safety Data Sheet Organoboron compounds Cluster chemistry Superacids