Boron-rich solids are compounds with unusual structures. Almost all of them contain B 12 icosahedral units and various interstitial atoms (ranging from nonmetals to metals) . Such structures make boron-rich compounds extremely stable, resulting in high (up to 2700 K) melting temperatures, chemical inertness and excellent mechanical properties . These properties of icosahedral boron-rich solids suggest that they will find many new applications. The extensive study of existing materials and the search for new boron-rich compounds are therefore of great importance and receive considerable attention in experimental and theoretical science.