Designed Synthesis of Multi-Functional Carboranes and Organotransition Metal-Carborane Complexes

摘要

Borons clusters, particularly the carboranes and their metal-containing derivatives, present intriguing possibilities for the construction of large electron-delocalized multilayer metal sandwich complexes, and, of particular interest, polymers exhibiting low-dimensional electrical conductivity. Following the synthesis of the first ionic (ref.1) and electrically neutral (ref.2) triple-decker sandwich complexes, a number of triple- to hexa decker boron-containing sandwiches have been characterized (ref.3.4), and an electrically conducting nickel-diborolyl polymer has been reported (ref.5). This article describes our group's effort to utilize nido C2B4 units and their derivatives in the directed synthesis of multidecker (and eventually polydecker) sandwich complexes and other potentially novel materials.