A Genuine Trivalent Bis-Acylphosphide (BAP) Complex of Uranium

Hochholzer J, Waldschmidt P, Heinemann FW, Grützmacher H, Meyer K (2024)

Publication Type: Journal article

Publication year: 2024


Book Volume: 27

Article Number: e202300592

Journal Issue: 6

DOI: 10.1002/ejic.202300592


The genuine trivalent uranium complex, K[UIII(mesBAP)4], employing four bidentate bis(2,4,6-trimethylbenzoyl)phosphide (mesBAP) chelating ligands, is reported and obtained by the reduction of the literature-known tetravalent analog [UIV(mesBAP)4]. Hence, the bis(acyl)phosphide mesBAP ligand allowed to establish a fully reversible redox couple with uranium in the oxidation states +III and +IV. In both complexes [U(mesBAP)4]0/−, the uranium ions are coordinated to four mesBAP ligands in a square antiprismatic geometry. All new compounds have been characterized by single-crystal XRD analysis, 1H and 31P NMR, and UV/Vis/NIR electronic absorption spectroscopy, as well as SQUID magnetization and electrochemical measurements, and CW X-band EPR in the case of the trivalent complex.

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Hochholzer, J., Waldschmidt, P., Heinemann, F.W., Grützmacher, H., & Meyer, K. (2024). A Genuine Trivalent Bis-Acylphosphide (BAP) Complex of Uranium. European Journal of Inorganic Chemistry, 27(6). https://doi.org/10.1002/ejic.202300592


Hochholzer, Jakob, et al. "A Genuine Trivalent Bis-Acylphosphide (BAP) Complex of Uranium." European Journal of Inorganic Chemistry 27.6 (2024).

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