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Diborane Cu paper Angewandte Revised no highlighting.pdf (1.46 MB)

Bottleable neutral analogues of [B2H5]- as versatile and strongly binding eta2 donor ligands

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posted on 2023-06-09, 12:28 authored by Sunewang R Wang, Dominic Prieschl, James D Mattock, Merle Arrowsmith, Conor Pranckevicius, Tom E Stennett, Rian D Dewhurst, Alfredo VargasAlfredo Vargas, Holger Braunschweig
Herein we report the discovery that two bottleable, neutral, base-stabilized diborane(5) compounds are able to bind strongly to a number of copper(I) complexes exclusively through their B-B bond. The resulting complexes represent the first known complexes containing unsupported, neutral sB-B diborane ligands. Single-crystal X-ray analyses of these complexes show that the X-Cu moiety (X = Cl, OTf, C6F5) lies opposite the bridging hydrogen of the diborane and is near perpendicular to the B-B bond, interacting almost equally with both boron atoms and causing a B-B bond elongation. DFT studies show that s donation from and p backdonation to the pseudo-p-like B-B bond account for their formation. Astoundingly, these copper sB-B-complexes are inert to ligand exchange with pyridine under either heating or photoirradiation.

History

Publication status

  • Published

File Version

  • Accepted version

Journal

Angewandte Chemie International Edition

ISSN

1433-7851

Publisher

Wiley

Issue

21

Volume

57

Page range

6347-6351

Department affiliated with

  • Chemistry Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2018-03-19

First Open Access (FOA) Date

2019-03-14

First Compliant Deposit (FCD) Date

2018-03-19

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