Full Electron Delocalization across the Cluster in 1,12-bisBMes2-p-carborane Radical Anion
Lin Wu,
Xinning Zhang,
Michael Moos
et al.
Abstract:Conjugation between three-dimensional (3D) carboranes and the attached substituents is commonly believed to be very weak. In this paper, we report that reducing 1,12-bis(BMes 2 )-pcarborane (B 2 pCab) with one electron gives a radical anion with a centrosymmetric semiquinoidal structure. This radical anion shows extensive electron delocalization between the two boron centers over the p-carborane bridge due to the overlap of carborane lowest unoccupied molecular orbital (LUMO) and the BMes 2 LUMO. Unlike dianio… Show more
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