Issue 8, 2024

Steric control of Mg–Mg bond formation vs. N2 activation in the reduction of bulky magnesium diamide complexes

Abstract

Reduction of the magnesium(II) diamide [Mg(TripNON)] (TripNON = 4,5-bis(2,4,6-triisopropylanilido)-2,7-diethyl-9,9-dimethyl-xanthene) with 5% w/w K/KI leads to a good yield of a dianionic dimagnesium(I) species, as its potassium salt, [{K(TripNON)Mg}2]. An X-ray crystallographic analysis shows the molecule to contain a very long Mg–Mg bond (3.137(2) Å). The formation of [{K(TripNON)Mg}2] contrasts with a previously reported reduction of a magnesium(II) complex incorporating a bulkier diamide ligand, which instead afforded a magnesium–dinitrogen complex. In the current study, [{K(TripNON)Mg}2] has been shown to be a viable reagent for the reductive activation of CO, H2 and N2O.

Graphical abstract: Steric control of Mg–Mg bond formation vs. N2 activation in the reduction of bulky magnesium diamide complexes

Supplementary files

Article information

Article type
Communication
Submitted
27 nov. 2023
Accepted
19 déc. 2023
First published
19 déc. 2023

Chem. Commun., 2024,60, 1016-1019

Steric control of Mg–Mg bond formation vs. N2 activation in the reduction of bulky magnesium diamide complexes

R. Mondal, M. J. Evans, D. T. Nguyen, T. Rajeshkumar, L. Maron and C. Jones, Chem. Commun., 2024, 60, 1016 DOI: 10.1039/D3CC05787A

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