Pividori DM, Miehlich M, Kestel B, Heinemann FW, Scheurer A, Patzschke M, Meyer K (2021)
Publication Type: Journal article
Publication year: 2021
Book Volume: 60
Pages Range: 16455-16465
Journal Issue: 21
DOI: 10.1021/acs.inorgchem.1c02310
The synthesis of a tripodal, S-based ligand, namely the mesitylene-anchored, tris-thiophenolate-functionalized (mes(Me,AdArS)3)3- (1)3-, and its coordination chemistry with low-valent uranium to form [UIII((SArAd,Me)3mes)] (1-U) are reported. Single-crystal X-ray diffraction analysis reveals a C3-symmetric molecular structure. Full characterization of 1-U was performed using nuclear magnetic resonance, UV-vis-NIR electronic absorption, and electron paramagnetic resonance spectroscopies as well as SQUID magnetometry, thus confirming the U(III) oxidation state. Alternating current magnetic studies show that 1-U exhibits single-molecule magnet behavior at low temperatures in a non-zero external field. Comparison of these results to those of the previously reported mesitylene-anchored complexes, [UIII((OArAd,Me)3mes)] and [UIII((OArtBu,tBu)3mes)], indicates a drastic change in the electronic structure when moving from phenolate-based ligands to thiophenolate-based 1, which is further discussed by means of computational analysis (NBO, DFT, and QTAIM). Despite the U-O bonds being stronger, a much higher covalency was found for the U-S analogue.
APA:
Pividori, D.M., Miehlich, M., Kestel, B., Heinemann, F.W., Scheurer, A., Patzschke, M., & Meyer, K. (2021). Uranium Going the Soft Way: Low-Valent Uranium(III) Coordinated to an Arene-Anchored Tris-Thiophenolate Ligand. Inorganic Chemistry, 60(21), 16455-16465. https://doi.org/10.1021/acs.inorgchem.1c02310
MLA:
Pividori, Daniel Maximilian, et al. "Uranium Going the Soft Way: Low-Valent Uranium(III) Coordinated to an Arene-Anchored Tris-Thiophenolate Ligand." Inorganic Chemistry 60.21 (2021): 16455-16465.
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