Ligand exchange at tetra-coordinated beryllium centres

Buchner MR, Cocic D, Ivlev SI, Spang N, Mueller M, Puchta R (2023)

Publication Type: Journal article

Publication year: 2023

Journal

Dalton Transactions Royal Society of Chemistry

DOI: 10.1039/d3dt00713h

Abstract

Mono and dinuclear phosphine complexes of beryllium halides [(PMe3)2BeX2], [(PMe3)BeX2]2 and [(PCy3)BeX2]2 (X = Cl, Br, I) were synthesised and characterised via NMR and IR spectroscopy as well as single crystal X-ray diffraction experiments. Dissociation and ligand exchange processes at these complexes were investigated through variable temperature NMR experiments in combination with line shape analysis and complemented by quantum chemical calculations. The PMe3 dissociation energy is smallest in [(PMe3)2BeCl2], while PMe3 exchange is similar in energy in all mononuclear [(PMe3)2BeX2] complexes and follows an interchange mechanism. While [(PMe3)BeX2]2 dissociates homolytically, [(PCy3)BeX2]2 cleaves one phosphine ligand. These distinctive dissociation processes account for the different chemical behaviour of these complexes.

Authors with CRIS profile

Ralph Puchta Lehrstuhl für Anorganische und Metallorganische Chemie

Involved external institutions

Philipps-Universität Marburg DE Germany (DE)

How to cite

APA:

Buchner, M.R., Cocic, D., Ivlev, S.I., Spang, N., Mueller, M., & Puchta, R. (2023). Ligand exchange at tetra-coordinated beryllium centres. Dalton Transactions. https://doi.org/10.1039/d3dt00713h

MLA:

Buchner, Magnus R., et al. "Ligand exchange at tetra-coordinated beryllium centres." Dalton Transactions (2023).

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