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Synthesis and chemical properties of cobalt bis(dicarbollides) [commo-3,3'-Co(1,2-C2B9H11)2]- and [commo-2,2'-Co(1,7-C2B9H11)2]- and their derivatives are reviewed. An attention is also paid to potential applications of cobalt bis(dicarbollides). A review with 132 references.

This review focuses on the current status and perspectives of the application of polyhedral boron hydrides in medicine. The main topics discussed are boron neutron capture therapy for cancer and radionuclide diagnostics and therapy. X-ray contrast diagnostics, antitumor activity of some metal deriva-

Synthesis and chemical properties of the closo-dodecaborate anion [B12H12]2- and its derivatives are reviewed. Attention is also paid to potential applications of the closo-dodecaborate derivatives with emphasis on medical applications. A review with 325 references.