Ytterbium(II) fluoride

Ytterbium(II) fluoride
Names
	Other names Ytterbium difluoride
Identifiers
CAS Number	15192-18-4;
3D model (JSmol)	Interactive image;
ChemSpider	19971765;
PubChem CID	21115929;
	InChI InChI=1S/2FH.Yb/h2*1H;/q;;+2/p-2 Key: DZIGMZRMIWDBCU-UHFFFAOYSA-L;
	SMILES [F-].[F-].[Yb+2];
Properties
Chemical formula	F2Yb
Molar mass	211.042 g·mol−1
Appearance	gray crystals
Density	g/cm3
Melting point	1,407 °C (2,565 °F; 1,680 K)
Boiling point	2,380 °C (4,320 °F; 2,650 K)
Solubility in water	insoluble
Structure
Crystal structure	Fluorite structure
Space group	Fm3m (No. 225)
Lattice constant	a = 559.93 pm
Formula units (Z)	4
Related compounds
Other anions	Ytterbium(II) chloride ; Ytterbium(II) iodide
Other cations	Samarium(II) fluoride ; Europium(II) fluoride ; Thulium(II) fluoride
Related compounds	Ytterbium(III) fluoride
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Ytterbium(II) fluoride is a binary inorganic compound of ytterbium and fluorine with the chemical formula YbF₂.^[2]^[3]^[4]

Synthesis

Ytterbium(II) fluoride can be obtained by reacting ytterbium(III) fluoride with ytterbium or hydrogen.

2YbF₃ + Yb → 3YbF₂

2YbF₃ + H₂ → 2YbF₂ + 2HF

Physical properties

Ytterbium(II) fluoride is a gray solid and crystallizes in the so-called fluorite type analogous to calcium fluoride with a unit cell a axis of 559.46 pm. In the crystal structure of ytterbium(II) fluoride, the Yb²⁺ cation is surrounded by eight F⁻ anions in the form of a cube, which is tetrahedrally surrounded by four Yb²⁺.^[5]

References

^ Greis, Ortwin; Haschke, John M. (1982). "Chapter 45 Rare earth fluorides". Handbook on the Physics and Chemistry of Rare Earths Volume 5. Vol. 5. Elsevier. pp. 387–460. doi:10.1016/s0168-1273(82)05008-9. ISBN 9780444863751. ISSN 0168-1273.
^ Meyer, G.; Morss, L. R. (6 December 2012). Synthesis of Lanthanide and Actinide Compounds. Springer Science & Business Media. p. 57. ISBN 978-94-011-3758-4. Retrieved 5 April 2023.
^ Yaws, Carl (6 January 2015). The Yaws Handbook of Physical Properties for Hydrocarbons and Chemicals: Physical Properties for More Than 54,000 Organic and Inorganic Chemical Compounds, Coverage for C1 to C100 Organics and Ac to Zr Inorganics. Gulf Professional Publishing. p. 807. ISBN 978-0-12-801146-1. Retrieved 5 April 2023.
^ Macintyre, Jane E. (23 July 1992). Dictionary of Inorganic Compounds. CRC Press. p. 3160. ISBN 978-0-412-30120-9. Retrieved 5 April 2023.
^ Reckeweg, Olaf; DiSalvo, Francis J. (1 December 2017). "Single-crystal structure refinement of YbF2 with a remark about YbH2". Zeitschrift für Naturforschung B. 72 (12): 995–998. doi:10.1515/znb-2017-0147. ISSN 1865-7117. S2CID 102902501. Retrieved 5 April 2023.

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[1] Greis, Ortwin; Haschke, John M. (1982). "Chapter 45 Rare earth fluorides". Handbook on the Physics and Chemistry of Rare Earths Volume 5. Vol. 5. Elsevier. pp. 387–460. doi:10.1016/s0168-1273(82)05008-9. ISBN 9780444863751. ISSN 0168-1273.

[2] Meyer, G.; Morss, L. R. (6 December 2012). Synthesis of Lanthanide and Actinide Compounds. Springer Science & Business Media. p. 57. ISBN 978-94-011-3758-4. Retrieved 5 April 2023.

[3] Yaws, Carl (6 January 2015). The Yaws Handbook of Physical Properties for Hydrocarbons and Chemicals: Physical Properties for More Than 54,000 Organic and Inorganic Chemical Compounds, Coverage for C1 to C100 Organics and Ac to Zr Inorganics. Gulf Professional Publishing. p. 807. ISBN 978-0-12-801146-1. Retrieved 5 April 2023.

[4] Macintyre, Jane E. (23 July 1992). Dictionary of Inorganic Compounds. CRC Press. p. 3160. ISBN 978-0-412-30120-9. Retrieved 5 April 2023.

[5] Reckeweg, Olaf; DiSalvo, Francis J. (1 December 2017). "Single-crystal structure refinement of YbF2 with a remark about YbH2". Zeitschrift für Naturforschung B. 72 (12): 995–998. doi:10.1515/znb-2017-0147. ISSN 1865-7117. S2CID 102902501. Retrieved 5 April 2023.

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