Abstract
The Front Cover shows selected tetrapodal-pentadentate “butterflies” taking flight. First noted as bearing resemblance to butterflies by Paine and Nordlander, these 5-coordinate frameworks have found applications in areas such as H2 evolution catalysis, N2 reduction chemistry, and as scaffolds to support high-valent metal-oxo compounds. Our contribution to this topology consists of a carbon butterfly composed of five N-heterocyclic carbene donors bridged by arylborate linkers to provide a dianionic framework upon removal of five protons. More information can be found in the Research Article by J. J. Scepaniak and co-workers.
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