A radical tricationic rhomboid tetraborane(4) with four-center, five-electron bonding
The red-colored tetraborane(4) [B4(hpp)4]3+. (3; hpp=1,3,4,6,7,8-hexahydro-2H-pyrimido[1,2-a]pyrimidinate) with a rhomboid B4 skeleton stabilized by four N donors, was synthesized by the reaction of the strong hydride abstraction reagent [(acridine)BCl2][AlCl4] with the electron-rich diborane(4) [HB...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article (Journal) |
| Language: | English |
| Published: |
29 February 2016
|
| In: |
Angewandte Chemie. International edition
Year: 2016, Volume: 55, Issue: 13, Pages: 4345-4347 |
| ISSN: | 1521-3773 |
| DOI: | 10.1002/anie.201600296 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1002/anie.201600296 Verlag, lizenzpflichtig, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1002/anie.201600296 
|
| Author Notes: | Sebastian Litters, Elisabeth Kaifer, and Hans-Jörg Himmel |
| Summary: | The red-colored tetraborane(4) [B4(hpp)4]3+. (3; hpp=1,3,4,6,7,8-hexahydro-2H-pyrimido[1,2-a]pyrimidinate) with a rhomboid B4 skeleton stabilized by four N donors, was synthesized by the reaction of the strong hydride abstraction reagent [(acridine)BCl2][AlCl4] with the electron-rich diborane(4) [HB(hpp)]2 (1). The salt 3[AlCl4]3 was structurally characterized and the presence of unpaired electrons proven by EPR measurements. The unprecedented radical tricationic 3 is distinguished by a high positive charge and boron atoms in a low oxidation state (less than two). |
|---|---|
| Item Description: | Gesehen am 27.05.2020 |
| Physical Description: | Online Resource |
| ISSN: | 1521-3773 |
| DOI: | 10.1002/anie.201600296 |