1,1'-bis(o-carborane) DFT ELF Lewis acid Research & information: general X-ray structure bis(nickelation) boron chemistry boron clusters boron neutron capture therapy carbonium ylide carborane carboranes cholesterol chromium bis(1,2-dicarbollide) crystal and molecular structure cysteine deboronation diastereoisomers dihalogen bond electric conductivity electron density fluorescence iodo derivatives iron bis(1,2-dicarbollide) labeled compound liquid crystals metalation nickel(II) half-sandwich complexes nido-carborane