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The Metal-Mediated Coupling of the Diselenaundecaborate Anion [Se₂B₉H₁₀]⁻

Lookup NU author(s): Professor William Clegg

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Abstract

The diselenaundecaborate anion, [Se₂B₉H₁₀]⁻ (1), is isolated in 49 % yield from the one-pot reaction of nido-B₁₀H₁₄, Proton Sponge and selenium in thf. In solution, 1 exhibits a fluxional interchange between symmetry-equivalent positions of its two selenium atoms and open-face ‘bridging’ hydrogen atom that cannot be frozen out on the NMR timescale. This is however resolved by solid-state boron-11 NMR spectroscopy, which shows the spectrum expected from a DFT/GIAO calculation. The treatment of two equivalents of 1 with HgCl₂ in dichloromethane affords the conjoined binary cluster anion [(Se₂B₉H₁₀)(SeB₉H₁₁)]⁻ (2), in which the ‘bridging’ selenium atom in 1 links to an {arachno-SeB₉H₁₁) moiety. This metal-mediated linking of selenaborane clusters potentially opens a gateway to new macropolyhedral heteroborane assemblies.

Publication metadata

Author(s): Bould J, Tok O, Clegg W, Londesborough MGS, Litecka M, Ehn M

Publication type: Article

Publication status: Published

Journal: Inorganica Chimica Acta

Year: 2023

Volume: 547

Print publication date: 01/03/2023

Online publication date: 10/12/2022

Acceptance date: 07/12/2022

Date deposited: 15/12/2022

ISSN (print): 0020-1693

ISSN (electronic): 1873-3255

Publisher: Elsevier BV

URL: https://doi.org/10.1016/j.ica.2022.121341

DOI: 10.1016/j.ica.2022.121341

ePrints DOI: 10.57711/nvk9-kx14

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