TY  - JOUR
A1  - Budy, Hendrik
A1  - Gilmer, Jannik
A1  - Trageser, Timo
A1  - Wagner, Matthias
T1  - Anionic organoboranes: delicate flowers worth caring for
T2  - European Journal of Inorganic Chemistry
N2  - Subvalent boron compounds contain boron atoms with oxidation numbers lower than +III. Over the last decades, the development of isolable derivatives has relied heavily on the use of specially designed ligands capable of stabilizing the electron‐rich boron centers electronically or through steric protection. Herein, we are exclusively reviewing anionic organo(hydro)boranes largely devoid of stabilizing ligands or heteroatom substituents. The restriction to these subvalent species is intended to minimize the risk of ligand artifacts being included when carving out the characteristic properties of the respective boron centers, such as nucleophilic or carbenoid behavior. The scope of this review encompasses triorganoborane radical monoanions ([·BR3]–) along with closed‐shell dianions ([:BR3]2–), boryl anions ([:BR2]–), as well as B–B single‐bonded diborane(6) dianions ([R3B–BR3]2–) and diborane(5) monoanions ([R2B–BR3]–), and finally B=B double‐bonded diborane(4) dianions ([R2B=BR2]2–). We are showing how these species are related to each other and comment on their bonding situations from an experimentalist's perspective.
KW  - Anionic boranes
KW  - Dynamic covalent chemistry
KW  - Organoboranes
KW  - Subvalent compounds
KW  - Umpolung
Y1  - 2020
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/56496
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-564963
SN  - 1099-0682
VL  - 2020
IS  - 44
SP  - 4148
EP  - 4162
PB  - Wiley-VCH
CY  - Weinheim
ER  -