An Isolable Radical Anion Based on the Borole Framework

摘要

The element boron is known to have a variety of ways to relieve its inherent electron deficiency. The acceptance of an electron pair (Lewis acidity) has applications in catalysis and activation of element-element bonds (frustrated Lewis pairs). The combination of boron with π-donating substitu-ents (e.g. BF3) and its incorporation into organic π-conjugated systems allows the empty p_z orbital of boron to participate in π bonding and π conjugation, respectively, and the latter enables the use of boron in optoelectronic materials with unique properties.