Activation of SO2 and CO2 by trivalent uranium leading to sulfite/dithionite and carbonate/oxalate complexes.

Schmidt AC, Heinemann FW, Kefalidis CE, Maron L, Roesky PW, Meyer K (2014)

Publication Status: Published

Publication Type: Journal article

Publication year: 2014

Journal

Chemistry - A European Journal Wiley

Book Volume: 20

Pages Range: 13501-6

Journal Issue: 42

DOI: 10.1002/chem.201404400

Abstract

The first sulfite [{(((nP,Me) ArO)3 tacn)U(IV) }2 (μ-κ(1) :κ(2) -SO3 )] (tacn=triazacyclononane) and dithionite [{(((nP,Me) ArO)3 tacn)U(IV) }2 (μ-κ(2) :κ(2) -S2 O4 )] complexes of uranium from reaction with gaseous SO2 have been prepared. Additionally, the reductive activation of CO2 was investigated with respect to the rare oxalate [{(((nP,Me) ArO)3 tacn)U(IV) }2 (μ-κ(2) :κ(2) -C2 O4 )] formation. This ultimately provides the unique S2 O4 (2-) /C2 O4 (2-) and SO3 (2-) /CO3 (2-) complex pairs. All new complexes were characterized by a combination of single-crystal X-ray diffraction, elemental analysis, UV/Vis/NIR electronic absorption, IR vibrational, and (1) H NMR spectroscopy, as well as magnetization (VT SQUID) studies. Moreover, density functional theory (DFT) calculations were carried out to gain further insight into the reaction mechanisms. All observations, together with DFT, support the assumption that SO2 and CO2 show similar (dithionite/oxalate) to analogous (sulfite/carbonate) activation behavior with uranium complexes.

Authors with CRIS profile

Anna-Corina Schmidt 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 FR France (FR) Karlsruhe Institute of Technology (KIT) DE Germany (DE)

How to cite

APA:

Schmidt, A.-C., Heinemann, F.W., Kefalidis, C.E., Maron, L., Roesky, P.W., & Meyer, K. (2014). Activation of SO2 and CO2 by trivalent uranium leading to sulfite/dithionite and carbonate/oxalate complexes. Chemistry - A European Journal, 20(42), 13501-6. https://doi.org/10.1002/chem.201404400

MLA:

Schmidt, Anna-Corina, et al. "Activation of SO2 and CO2 by trivalent uranium leading to sulfite/dithionite and carbonate/oxalate complexes." Chemistry - A European Journal 20.42 (2014): 13501-6.

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