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Holmium(III) selenide

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Holmium(III) selenide
Identifiers
CAS Number	12162-60-6^Y
3D model (JSmol)	Interactive image
ChemSpider	145819
EC Number	235-303-9
PubChem CID	166641
InChI InChI=1S/2Ho.3Se/q2+3;3-2 Key: XDJRCWPMKKSKGI-UHFFFAOYSA-N
SMILES [Se-2].[Se-2].[Se-2].[Ho+3].[Ho+3]
Properties
Chemical formula	Ho₂Se₃
Molar mass	566.774 g·mol⁻¹
Appearance	brown^[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Holmium(III) selenide is an inorganic compound with the chemical formula Ho₂Se₃.

Preparation[edit]

Holmium(III) selenide can be obtained from the reaction of holmium and selenium (in the presence of iodine):^[2]

2 Ho + 3 Se → Ho₂Se₃

It can also be prepared by reacting holmium oxide and hydrogen selenide at high temperature.^[3]

Ho₂O₃ + 3 H₂Se → Ho₂Se₃ + 3 H₂O

Properties[edit]

Holmium(III) selenide can form orthorhombic AgHoSe₂ in the binary system of silver selenide.^[4]

References[edit]

^ K.-J. Range, Ch. Eglmeier (August 1991). "Crystal data for rare earth sesquiselenides Ln2Se3 (Ln ≡ Ho, Er, Tm, Yb, Lu) and structure refinement of Er2Se3". Journal of the Less Common Metals. 171 (1): L27–L30. doi:10.1016/0022-5088(91)90254-2. Retrieved 2023-06-13.

^ M.A. Bespyatov, A.E. Musikhin, V.N. Naumov, L.N. Zelenina, T.P. Chusova, R.E. Nikolaev, N.G. Naumov (March 2018). "Low-temperature thermodynamic properties of holmium selenide (2:3)". The Journal of Chemical Thermodynamics. 118: 21–25. doi:10.1016/j.jct.2017.10.013. Retrieved 2023-06-13.{{cite journal}}: CS1 maint: multiple names: authors list (link)

^ Guittard, Micheline; Benacerraf, A.; Flahaut, J. Selenides L2Se3 and L2Se4 of rare earth elements. Ann. Chim. (Paris), 1964. 9 (1-2): 25-34. CAN61: 38017.

^ Julien-Pouzol, M.; Guittard, M. Crystallochemical study of the ternary silver-rare earth-sulfur or selenium compounds situated along the silver chalcogenide-lanthanide(III) chalcogenide binary systems. Annales de Chimie (Paris, France), 1973. 8 (2): 139-145. ISSN 0151-9107.

Holmium compounds

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