1
|
Deubner HL, Graubner T, Buchner MR, Weigend F, Ivlev SI, Karttunen AJ, Kraus F. Surprises in the Solvent-Induced Self-Ionization in the Uranium Tetrahalide UX 4 (X = Cl, Br, I)/Ethyl Acetate System. ACS OMEGA 2022; 7:11995-12003. [PMID: 35449913 PMCID: PMC9016826 DOI: 10.1021/acsomega.2c00175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 01/28/2022] [Indexed: 06/14/2023]
Abstract
The reaction of the uranium(IV) halides UCl4, UBr4, or UI4 with ethyl acetate (EtOAc) leads to the formation of the complexes [UX3(EtOAc)4][UX5(EtOAc)] (X = Cl, Br) or [UI4(EtOAc)3]. Thus, both UCl4 and UBr4 show self-ionization in ethyl acetate to a distorted pentagonal bipyramidal [UX3(EtOAc)4]+ cation and a distorted octahedral [UX5(EtOAc)]- anion. Surprisingly, the chloride and bromide compounds are not isotypic. While [UCl3(EtOAc)4][UCl5(EtOAc)] crystallizes in the orthorhombic crystal system, space group P212121 at 250 K, the bromide compound crystallizes in the monoclinic crystal system, P121/n1 at 100 K. Unexpectedly, UI4 does not show self-ionization but forms [UI4(EtOAc)3] molecules, which crystallize in the monoclinic crystal system, P21/c, at 100 K. The compounds were characterized by single-crystal X-ray diffraction, IR, Raman, and NMR spectroscopy, as well as molecular quantum chemical calculations using solvent models.
Collapse
Affiliation(s)
- H. Lars Deubner
- Philipps-Universität
Marburg, Fachbereich Chemie, Hans-Meerwein-Str. 4, Marburg, Hessen 35032, Germany
| | - Tim Graubner
- Philipps-Universität
Marburg, Fachbereich Chemie, Hans-Meerwein-Str. 4, Marburg, Hessen 35032, Germany
| | - Magnus R. Buchner
- Philipps-Universität
Marburg, Fachbereich Chemie, Hans-Meerwein-Str. 4, Marburg, Hessen 35032, Germany
| | - Florian Weigend
- Philipps-Universität
Marburg, Fachbereich Chemie, Hans-Meerwein-Str. 4, Marburg, Hessen 35032, Germany
| | - Sergei I. Ivlev
- Philipps-Universität
Marburg, Fachbereich Chemie, Hans-Meerwein-Str. 4, Marburg, Hessen 35032, Germany
| | - Antti J. Karttunen
- Aalto
University, Department of Chemistry
and Materials Science, Kemistintie 1, Aalto 00076, Finland
| | - Florian Kraus
- Philipps-Universität
Marburg, Fachbereich Chemie, Hans-Meerwein-Str. 4, Marburg, Hessen 35032, Germany
| |
Collapse
|
2
|
Sidorenko GV, Grigor’ev MS, Gurzhiy VV, Suglobov DN, Tananaev IG. Crystal and molecular structure of uranyl acetylacetonate dimer, [UO2(C5H7O2)2]2. RADIOCHEMISTRY 2009. [DOI: 10.1134/s106636220904002x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
3
|
Kepert DL. Aspects of the Stereochemistry of Seven-Coordination. PROGRESS IN INORGANIC CHEMISTRY 2007. [DOI: 10.1002/9780470166260.ch2] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|