Aromatic Metal‐Centered Monocyclic Boron Rings: Co©B₈⁻ and Ru©B₉⁻

Abstract

Perfect symmetry: Photoelectron spectroscopy and theoretical calculations show that the B8 and B9 rings are stabilized by the metal atoms in Co©B8− and Ru©B9−, which possess D8h and D9h symmetry, respectively (see picture). The bonding between the metal atom and the boron ring is described by six delocalized σ electrons and six delocalized π electrons, which result in double aromaticity. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.