1,3,5-Tri-tert-butyl-2,4,6-triisopropyl-3,5-diaza-1-azonia-2,6-dibora- 4-borata[2.2.0]bicyclohexan, der erste Vertreter der Dewarborazine/ 1,3,5-Tri-tert-butyl-2,4,6-triisopropyl-3,5-diaza-1-azonia-2,6-dibora- 4-borata[2.2.0]bicyclohexane, the First Dewar Borazine

Peter Paetzold; Christoph von Plotho; Günter Schmid; Roland Boese

doi:10.1515/znb-1984-0814

Open Access Published by De Gruyter June 2, 2014

1,3,5-Tri-tert-butyl-2,4,6-triisopropyl-3,5-diaza-1-azonia-2,6-dibora- 4-borata[2.2.0]bicyclohexan, der erste Vertreter der Dewarborazine/ 1,3,5-Tri-tert-butyl-2,4,6-triisopropyl-3,5-diaza-1-azonia-2,6-dibora- 4-borata[2.2.0]bicyclohexane, the First Dewar Borazine

Peter Paetzold , Christoph von Plotho , Günter Schmid and Roland Boese

From the journal Zeitschrift für Naturforschung B

https://doi.org/10.1515/znb-1984-0814

Abstract

The iminoborane iPr-B ≡ N -tBu (1a), metastable at -78 °C, trimerizes to form (iPrBNtBu)₃ (4a) at elevated temperatures. The determination of the molecular and crystal structure reveals 4a to be a Dewar-borazine-type molecule with two short peripheral BN-double-bonds (136 and 138 pm) and an extra-long bridge BN-single-bond (175 pm). The same trimer 4a is formed by addition of la to the diazadiboretidine-type dimer (iPrBNtBu)₂, prepared independently. The ethyloboration and the azidoboration of la with BEt₃ and Me₃SiN₃, respectively, and the cycloaddition of PhN₃ to 1a follow expected patterns.

Keywords: Iminoborane; Diazadiboretidine; Borazine; Dewar Borazine

Received: 1984-2-29

Published Online: 2014-6-2

Published in Print: 1984-8-1

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

1,3,5-Tri-tert-butyl-2,4,6-triisopropyl-3,5-diaza-1-azonia-2,6-dibora- 4-borata[2.2.0]bicyclohexan, der erste Vertreter der Dewarborazine/ 1,3,5-Tri-tert-butyl-2,4,6-triisopropyl-3,5-diaza-1-azonia-2,6-dibora- 4-borata[2.2.0]bicyclohexane, the First Dewar Borazine

Abstract

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