UF                         
                        4
                                                  and the High-Pressure Polymorph HP-UF                         
                        4

Benjamin Scheibe; Jörn Bruns; Gunter Heymann; Malte Sachs; Antti J. Karttunen; Clemens Pietzonka; Sergei I. Ivlev; Hubert Huppertz; Florian Kraus

doi:10.1002/chem.201900639

UF ₄ and the High-Pressure Polymorph HP-UF ₄

Benjamin Scheibe, Jörn Bruns, Gunter Heymann, Malte Sachs, Antti J. Karttunen, Clemens Pietzonka, Sergei I. Ivlev, Hubert Huppertz, Florian Kraus^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › Scientific › peer-review

4 Citations (Scopus)

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Abstract

A laboratory-scale synthesis of UF ₄ is presented that utilizes the reduction of UF ₆ with sulfur in anhydrous hydrogen fluoride. An excess of sulfur can be removed by vacuum sublimation, yielding pure UF ₄ , as shown by powder X-ray diffraction, micro X-ray fluorescence analysis, infrared and Raman spectroscopy, as well as magnetic measurements. Furthermore, a single-crystalline, high-pressure modification of UF ₄ was obtained in a multi-anvil press at elevated temperatures. The high-pressure polymorph HP-UF ₄ was characterized by means of single-crystal and powder X-ray diffraction, as well as by magnetic measurements, and presents a novel crystal structure type. Quantum-chemical calculations show the HP-modification to be 10 kJ mol ⁻¹ per formula unit higher in energy compared to UF ₄ .

Original language	English
Pages (from-to)	7366-7374
Number of pages	9
Journal	Chemistry: A European Journal
Volume	25
Issue number	30
DOIs	https://doi.org/10.1002/chem.201900639
Publication status	Published - 28 May 2019
MoE publication type	A1 Journal article-refereed

Keywords

actinoids
fluorine
high-pressure chemistry
magnetic properties
uranium

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10.1002/chem.201900639

UF4 submittedSubmitted manuscript, 8.31 MBLicence: CC BY-NC

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Scheibe, B., Bruns, J., Heymann, G., Sachs, M., Karttunen, A. J., Pietzonka, C., Ivlev, S. I., Huppertz, H., & Kraus, F. (2019). UF ₄ and the High-Pressure Polymorph HP-UF ₄. Chemistry: A European Journal, 25(30), 7366-7374. https://doi.org/10.1002/chem.201900639

@article{1914428d55a045f397296e0433c4263d,

title = "UF 4 and the High-Pressure Polymorph HP-UF 4",

abstract = " A laboratory-scale synthesis of UF 4 is presented that utilizes the reduction of UF 6 with sulfur in anhydrous hydrogen fluoride. An excess of sulfur can be removed by vacuum sublimation, yielding pure UF 4 , as shown by powder X-ray diffraction, micro X-ray fluorescence analysis, infrared and Raman spectroscopy, as well as magnetic measurements. Furthermore, a single-crystalline, high-pressure modification of UF 4 was obtained in a multi-anvil press at elevated temperatures. The high-pressure polymorph HP-UF 4 was characterized by means of single-crystal and powder X-ray diffraction, as well as by magnetic measurements, and presents a novel crystal structure type. Quantum-chemical calculations show the HP-modification to be 10 kJ mol −1 per formula unit higher in energy compared to UF 4 . ",

keywords = "actinoids, fluorine, high-pressure chemistry, magnetic properties, uranium",

author = "Benjamin Scheibe and J{\"o}rn Bruns and Gunter Heymann and Malte Sachs and Karttunen, \{Antti J.\} and Clemens Pietzonka and Ivlev, \{Sergei I.\} and Hubert Huppertz and Florian Kraus",

year = "2019",

month = may,

day = "28",

doi = "10.1002/chem.201900639",

language = "English",

volume = "25",

pages = "7366--7374",

journal = "Chemistry: A European Journal",

issn = "0947-6539",

publisher = "Wiley",

number = "30",

}

Scheibe, B, Bruns, J, Heymann, G, Sachs, M, Karttunen, AJ, Pietzonka, C, Ivlev, SI, Huppertz, H & Kraus, F 2019, 'UF ₄ and the High-Pressure Polymorph HP-UF ₄', Chemistry: A European Journal, vol. 25, no. 30, pp. 7366-7374. https://doi.org/10.1002/chem.201900639

UF ₄ and the High-Pressure Polymorph HP-UF ₄. / Scheibe, Benjamin; Bruns, Jörn; Heymann, Gunter et al.
In: Chemistry: A European Journal, Vol. 25, No. 30, 28.05.2019, p. 7366-7374.

Research output: Contribution to journal › Article › Scientific › peer-review

TY - JOUR

T1 - UF 4 and the High-Pressure Polymorph HP-UF 4

AU - Scheibe, Benjamin

AU - Bruns, Jörn

AU - Heymann, Gunter

AU - Sachs, Malte

AU - Karttunen, Antti J.

AU - Pietzonka, Clemens

AU - Ivlev, Sergei I.

AU - Huppertz, Hubert

AU - Kraus, Florian

PY - 2019/5/28

Y1 - 2019/5/28

N2 - A laboratory-scale synthesis of UF 4 is presented that utilizes the reduction of UF 6 with sulfur in anhydrous hydrogen fluoride. An excess of sulfur can be removed by vacuum sublimation, yielding pure UF 4 , as shown by powder X-ray diffraction, micro X-ray fluorescence analysis, infrared and Raman spectroscopy, as well as magnetic measurements. Furthermore, a single-crystalline, high-pressure modification of UF 4 was obtained in a multi-anvil press at elevated temperatures. The high-pressure polymorph HP-UF 4 was characterized by means of single-crystal and powder X-ray diffraction, as well as by magnetic measurements, and presents a novel crystal structure type. Quantum-chemical calculations show the HP-modification to be 10 kJ mol −1 per formula unit higher in energy compared to UF 4 .

AB - A laboratory-scale synthesis of UF 4 is presented that utilizes the reduction of UF 6 with sulfur in anhydrous hydrogen fluoride. An excess of sulfur can be removed by vacuum sublimation, yielding pure UF 4 , as shown by powder X-ray diffraction, micro X-ray fluorescence analysis, infrared and Raman spectroscopy, as well as magnetic measurements. Furthermore, a single-crystalline, high-pressure modification of UF 4 was obtained in a multi-anvil press at elevated temperatures. The high-pressure polymorph HP-UF 4 was characterized by means of single-crystal and powder X-ray diffraction, as well as by magnetic measurements, and presents a novel crystal structure type. Quantum-chemical calculations show the HP-modification to be 10 kJ mol −1 per formula unit higher in energy compared to UF 4 .

KW - actinoids

KW - fluorine

KW - high-pressure chemistry

KW - magnetic properties

KW - uranium

UR - https://www.scopus.com/pages/publications/85065435241

U2 - 10.1002/chem.201900639

DO - 10.1002/chem.201900639

M3 - Article

AN - SCOPUS:85065435241

SN - 0947-6539

VL - 25

SP - 7366

EP - 7374

JO - Chemistry: A European Journal

JF - Chemistry: A European Journal

IS - 30

ER -

UF ₄ and the High-Pressure Polymorph HP-UF ₄

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