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Issue 6, 2018
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Addition of dihydrogen to a borylborenium center

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Abstract

The activation of a H–H bond, the simplest covalent bond, is a fundamentally important process. Addition of H2 to an elemental center typically occurs on low valent transition metal or main group complexes through oxidative addition to afford metal dihydride complexes. In contrast, activation of H2 on a high valent center generally results in heterolytic cleavage of the H–H bond to a proton and hydride. Here, we report experimental and computational evidence for the addition of H2 to a borenium center in an N-heterocyclic carbene (NHC) coordinated borylborenium cation, which leads to the formation of a dihydroborenium complex accompanied by the elimination of two σ-bonded substituents, namely mesityl (Mes) and pinacolboryl (Bpin) groups, as mesitylboronic ester.

Graphical abstract: Addition of dihydrogen to a borylborenium center

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Supplementary files

Article information


Submitted
21 Nov 2017
Accepted
27 Nov 2017
First published
28 Nov 2017

This article is Open Access
All publication charges for this article have been paid for by the Royal Society of Chemistry

Chem. Sci., 2018,9, 1433-1438
Article type
Edge Article

Addition of dihydrogen to a borylborenium center

J. Zheng, Z. H. Li and H. Wang, Chem. Sci., 2018, 9, 1433
DOI: 10.1039/C7SC04987K

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