Fluxional Bonds in Planar B₁₉⁻, Tubular Ta@B₂₀⁻, and Cage‐Like B₃₉⁻

Abstract

Based on detailed bonding analyses on the fluxional behaviors of planar B 19 − , tubular Ta@B 20 − , and cage‐like B 39 − , we propose the concept of fluxional bonds in boron nanoclusters as an extension of the classical localized bonds and delocalized bonds in chemistry. © 2018 Wiley Periodicals, Inc.