Stennett, Tom E, Mattock, James D, Vollert, Ivonne, Vargas, Alfredo and Braunschweig, Holger (2018) Unsymmetrical, cyclic diborenes and thermal rearrangement to a borylborylene. Angewandte Chemie International Edition, 57 (15). pp. 4098-4102. ISSN 1433-7851
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Abstract
Cyclic diboranes(4) based on a chelating monoanionic benzylphosphine linker were prepared by boron-silicon exchange between arylsilanes and B2Br4. Coordination of Lewis bases to the remaining sp2 boron atom yielded unsymmetrical sp3-sp3 diboranes, which were reduced with KC8 to their corresponding trans-diborenes. These compounds were studied by a combination of spectroscopic methods, X-ray diffraction and DFT calculations. PMe3-stabilized diborene 6 was found to undergo thermal rearrangement to gem-diborene 8. DFT calculations on 8 reveal a polar boron-boron bond, and indicate that the compound is best described as a borylborylene.
Item Type: | Article |
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Keywords: | boron; borylenes; DFT calculations; multiple bonds; rearrangements |
Schools and Departments: | School of Life Sciences > Chemistry |
Subjects: | Q Science > QD Chemistry |
Depositing User: | Alfredo Vargas |
Date Deposited: | 14 Mar 2018 10:06 |
Last Modified: | 01 Jul 2019 19:00 |
URI: | http://sro.sussex.ac.uk/id/eprint/73693 |
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