Wang, Sunewang R, Prieschl, Dominic, Mattock, James D, Arrowsmith, Merle, Pranckevicius, Conor, Stennett, Tom E, Dewhurst, Rian D, Vargas, Alfredo and Braunschweig, Holger (2018) Bottleable neutral analogues of [B2H5]- as versatile and strongly binding eta2 donor ligands. Angewandte Chemie International Edition, 57 (21). pp. 6347-6351. ISSN 1433-7851

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Abstract

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 σB-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 σ donation from and π backdonation to the pseudo-π-like B-B bond account for their formation. Astoundingly, these copper σB-B-complexes are inert to ligand exchange with pyridine under either heating or photoirradiation.

Item Type:	Article
Schools and Departments:	School of Life Sciences > Chemistry
Subjects:	Q Science > QD Chemistry
Depositing User:	Alfredo Vargas
Date Deposited:	19 Mar 2018 16:09
Last Modified:	04 Jul 2018 10:44
URI:	http://srodev.sussex.ac.uk/id/eprint/74424

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