The concept of deriving the structures of isomers of boranes using Kiremire?s and Lipscomb?s equations has been extended to the derivation of the structures of carboranes. The carbon atom is considered to be isoelectronic to the boron atom plus one electron. Just like the boranes, the carboranes also obey the relationship K = s +2t +y. A good number of carborane clusters both neutral and ionic are given as illustrative examples.