Issue 5, 2025
From the journal:

Chemical Science

Annulated carbocyclic gallylene and bis-gallylene with two-coordinated Ga(i) atoms†

Arne Merschel, ORCID logo a   Shkelqim Heda,a   Yury V. Vishnevskiy, ORCID logo a   Beate Neumann,a   Hans-Georg Stammlera  and  Rajendra S. Ghadwal ORCID logo *a  

* Corresponding authors

a Molecular Inorganic Chemistry and Catalysis, Inorganic and Structural Chemistry, Center for Molecular Materials, Faculty of Chemistry, Universität Bielefeld, Universitätsstrasse 25, Bielefeld, Germany
E-mail: rghadwal@uni-bielefeld.de
Web: http://www.ghadwalgroup.de

Abstract

The first carbocyclic gallylene [(ADC)2Ga(GaI2)] and bis-gallylene [(ADC)Ga]2 (ADC = PhC{N(Dipp)C}2; Dipp = 2,6-iPr2C6H3) featuring a central C4Ga2 ring annulated between two 1,3-imidazole rings are prepared by KC8 reductions of [(ADC)GaI2]2. Treatment of [(ADC)Ga]2 with Fe2(CO)9 affords complex [(ADC)GaFe(CO)4]2 in which each Ga(I) atom serves as a two-electron donor. [(ADC)Ga]2 activates white phosphorus (P4) and the Csp2–F bond of aryl fluorides (ArF) to yield compounds [(ADC)Ga(P4)]2 and cis-/trans-[(ADC)GaF(Ar)]2, respectively. [(ADC)Ga]2 undergoes oxidation with (Me2S)AuCl to give [(ADC)GaCl2]2, while with PhN[double bond, length as m-dash]NPh it forms [1 + 4]-cycloaddition product [(ADC)GaN(Ph)N[double bond, length as m-dash]C6H5]2 by the dearomatization of one of the phenyl rings.

Graphical abstract: Annulated carbocyclic gallylene and bis-gallylene with two-coordinated Ga(i) atoms

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Article information

DOI
https://doi.org/10.1039/D4SC06782G
Article type
Edge Article
Submitted
07 Oct 2024
Accepted
09 Nov 2024
First published
14 Nov 2024
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY license

Chem. Sci., 2025,16, 2222-2230

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Annulated carbocyclic gallylene and bis-gallylene with two-coordinated Ga(I) atoms

A. Merschel, S. Heda, Y. V. Vishnevskiy, B. Neumann, H. Stammler and R. S. Ghadwal, Chem. Sci., 2025, 16, 2222 DOI: 10.1039/D4SC06782G

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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