ИСТИНА

Fifty years ago the first papers on synthesis of icosahedral carboranes C2B10H12 have been published, and these publications opened a new page in chemistry history. Carboranes were shown to be important both from fundamental point of view and for practical perspective. In carboranes the unusual to that time two-electron three-centered and multi-centered bonds were realized. Carborane gave an example of three-dimensional aromatic compound (Fig. 1).