A complete series of uranium(iv) complexes with terminal hydrochalcogenido (EH) and chalcogenido (E) ligands e = O, S, Se, Te

Rosenzweig M, Hümmer J, Scheurer A, Lamsfus CA, Heinemann FW, Maron L, Mazzanti M, Meyer K (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Dalton Transactions Royal Society of Chemistry

Book Volume: 48

Pages Range: 10853-10864

Journal Issue: 29

DOI: 10.1039/c9dt00530g

Abstract

We here report the synthesis and characterization of a complete series of terminal hydrochalcogenido, U-EH, and chalcogenido uranium(iv) complexes, U≡E (with E = O, S, Se, Te), supported by the (^Ad,MeArOH)3tacn (1,4,7-tris(3-(1-adamantyl)-5-methyl-2-hydroxybenzyl)-1,4,7-triazacyclononane) ligand system. Reaction of H2E with the trivalent precursor [((^Ad,MeArO)3tacn)U] (1) yields the corresponding uranium(iv) hydrochalcogenido complexes [((^Ad,MeArO)3tacn)U(EH)] (2). Subsequent deprotonation of the terminal hydrochalcogenido species with KN(SiMe3)2, in the presence of 2.2.2-cryptand, gives access to the uranium(iv) complexes with terminal chalcogenido ligands [K(2.2.2-crypt)][((^Ad,MeArO)3tacn)U≡E] (3). In order to study the influence of the varying terminal chalogenido ligands on the overall molecular and electronic structure, all complexes were studied by single-crystal X-ray diffractometry, UV/vis/NIR, electronic absorption, and IR vibrational spectroscopy as well as SQUID magnetometry and computational analyses (DFT, MO, NBO).

Authors with CRIS profile

Michael Rosenzweig Lehrstuhl für Anorganische und Allgemeine Chemie Julian Hümmer Lehrstuhl für Anorganische und Allgemeine Chemie Andreas Scheurer Lehrstuhl für Anorganische und Allgemeine Chemie Frank Wilhelm Heinemann Lehrstuhl für Anorganische und Allgemeine Chemie Karsten Meyer Lehrstuhl für Anorganische und Allgemeine Chemie

Involved external institutions

Université Fédérale de Toulouse Midi-Pyrénées

France (FR) École Polytechnique Fédérale de Lausanne (EPFL)

Switzerland (CH)

How to cite

APA:

Rosenzweig, M., Hümmer, J., Scheurer, A., Lamsfus, C.A., Heinemann, F.W., Maron, L.,... Meyer, K. (2019). A complete series of uranium(iv) complexes with terminal hydrochalcogenido (EH) and chalcogenido (E) ligands e = O, S, Se, Te. Dalton Transactions, 48(29), 10853-10864. https://doi.org/10.1039/c9dt00530g

MLA:

Rosenzweig, Michael, et al. "A complete series of uranium(iv) complexes with terminal hydrochalcogenido (EH) and chalcogenido (E) ligands e = O, S, Se, Te." Dalton Transactions 48.29 (2019): 10853-10864.

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