Holmium(III) selenide

(Redirected from Holmium sesquiselenide)

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

Holmium(III) selenide
Identifiers
3D model (JSmol)
ChemSpider
EC Number
  • 235-303-9
  • InChI=1S/2Ho.3Se/q2*+3;3*-2
    Key: XDJRCWPMKKSKGI-UHFFFAOYSA-N
  • [Se-2].[Se-2].[Se-2].[Ho+3].[Ho+3]
Properties
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).

Preparation

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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

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

References

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  1. ^ 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.
  2. ^ 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)
  3. ^ 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.
  4. ^ 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.