Holmium(III) fluoride

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Holmium(III) fluoride
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.033.942 OOjs UI icon edit-ltr-progressive.svg
EC Number
  • 237-352-1
PubChem CID
UNII
  • InChI=1S/3FH.Ho/h3*1H;/q;;;+3/p-3
    Key: FDIFPFNHNADKFC-UHFFFAOYSA-K
  • F[Ho](F)F
Properties
HoF3
Molar mass 221.93
Appearanceyellowish powder
Density 7.64g/cm3 [1]
Melting point 1145 °C [2]
Boiling point >2200 °C [1]
Hazards
GHS labelling:
GHS-pictogram-skull.svg GHS-pictogram-exclam.svg
Danger
H301, H311, H315, H319, H331, H335
P261, P264, P270, P271, P280, P301+P310, P302+P352, P304+P340, P305+P351+P338, P311, P312, P321, P322, P330, P332+P313, P337+P313, P361, P362, P363, P403+P233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Holmium(III) fluoride is an inorganic compound with a chemical formula of HoF3.

Contents

Preparation

Holmium(III) fluoride can be produced by reacting holmium oxide and ammonium fluoride, then crystallising it from the ammonium salt formed in solution: [3]

Ho2O3 + 6NH4F ⟶ 2HoF3 + 6NH3 + 2H2O

It can also be prepared by directly reacting holmium with fluorine: [4]

2Ho + 3F2 → 2HoF3

Properties

Holmium(III) fluoride is a yellowish powder that is insoluble in water. [5] It has an orthorhombic crystal system (corresponding to β-YF3 [6] ) with the space group Pnma (space group no. 62). [7] However, there is also a trigonal low-temperature form of the lanthanum(III) fluoride type. [3]

Related Research Articles

<span class="mw-page-title-main">Erbium</span> Chemical element, symbol Er and atomic number 68

Erbium is a chemical element; it has symbol Er and atomic number 68. A silvery-white solid metal when artificially isolated, natural erbium is always found in chemical combination with other elements. It is a lanthanide, a rare-earth element, originally found in the gadolinite mine in Ytterby, Sweden, which is the source of the element's name.

<span class="mw-page-title-main">Holmium</span> Chemical element, symbol Ho and atomic number 67

Holmium is a chemical element; it has symbol Ho and atomic number 67. It is a rare-earth element and the eleventh member of the lanthanide series. It is a relatively soft, silvery, fairly corrosion-resistant and malleable metal. Like many other lanthanides, holmium is too reactive to be found in native form, as pure holmium slowly forms a yellowish oxide coating when exposed to air. When isolated, holmium is relatively stable in dry air at room temperature. However, it reacts with water and corrodes readily, and also burns in air when heated.

<span class="mw-page-title-main">Chromium(III) fluoride</span> Chemical compound

Chromium(III) fluoride is an inorganic compound with the chemical formula CrF3. It forms several hydrates. The compound CrF3 is a green crystalline solid that is insoluble in common solvents, but the hydrates [Cr(H2O)6]F3 (violet) and [Cr(H2O)6]F3·3H2O (green) are soluble in water. The anhydrous form sublimes at 1100–1200 °C.

<span class="mw-page-title-main">Iron(III) fluoride</span> Chemical compound

Iron(III) fluoride, also known as ferric fluoride, are inorganic compounds with the formula FeF3(H2O)x where x = 0 or 3. They are mainly of interest by researchers, unlike the related iron(III) chloride. Anhydrous iron(III) fluoride is white, whereas the hydrated forms are light pink.

<span class="mw-page-title-main">Scandium fluoride</span> Chemical compound

Scandium(III) fluoride, ScF3, is an ionic compound. This salt is slightly soluble in water but dissolves in the presence of excess fluoride to form the ScF63− anion.

<span class="mw-page-title-main">Rubidium fluoride</span> Chemical compound

Rubidium fluoride (RbF) is the fluoride salt of rubidium. It is a cubic crystal with rock-salt structure.

Arsenic trifluoride is a chemical compound of arsenic and fluorine with the chemical formula AsF3. It is a colorless liquid which reacts readily with water.

<span class="mw-page-title-main">Bismuth trifluoride</span> Chemical compound

Bismuth(III) fluoride or bismuth trifluoride is a chemical compound of bismuth and fluorine. The chemical formula is BiF3. It is a grey-white powder melting at 649 °C.

Dysprosium(III) fluoride is an inorganic compound of dysprosium with a chemical formula DyF3.

Praseodymium(III) fluoride is an inorganic compound with the formula PrF3, being the most stable fluoride of praseodymium.

Europium(III) fluoride is an inorganic compound with a chemical formula EuF3.

Gadolinium(III) fluoride is an inorganic compound with a chemical formula GdF3.

<span class="mw-page-title-main">Holmium(III) nitrate</span> Chemical compound

Holmium (III) nitrate is an inorganic compound, a salt of holmium and nitric acid with the chemical formula Ho(NO3)3. The compound forms yellowish crystals, dissolves in water, also forms crystalline hydrates.

<span class="mw-page-title-main">Lutetium(III) acetate</span> Compound of lutetium

Lutetium(III) acetate is the acetate salt of lutetium with the chemical formula of Lu(CH3COO)3.

<span class="mw-page-title-main">Ruthenium(III) fluoride</span> Chemical compound

Ruthenium(III) fluoride is a fluoride of ruthenium, with the chemical formula of RuF3.

<span class="mw-page-title-main">Protactinium(V) fluoride</span> Chemical compound

Protactinium(V) fluoride is a fluoride of protactinium with the chemical formula PaF5.

<span class="mw-page-title-main">Holmium(III) sulfide</span> Chemical compound

Holmium(III) sulfide is the sulfide of holmium, with the chemical formula of Ho2S3. Like other rare earth sulfides, it is used as a high-performance inorganic pigment.

<span class="mw-page-title-main">Holmium(III) iodide</span> Chemical compound

Holmium(III) iodide is an iodide of holmium, with the chemical formula of HoI3. It is used as a component of metal halide lamps.

Erbium compounds are compounds containing the element erbium (Er). These compounds are usually dominated by erbium in the +3 oxidation state, although the +2, +1 and 0 oxidation states have also been reported.

Americium compounds are compounds containing the element americium (Am). These compounds can form in the +2, +3, and +4, although the +3 oxidation state is the most common. The +5, +6 and +7 oxidation states have also been reported.

References

  1. 1 2 "Holmium Fluoride".
  2. ↑ Shaimuradov, I. B.; Reshetnikova, L. P.; Novoselova, A. V. Phase diagram of the potassium fluoride-holmium fluoride system. Izvestiya Akademii Nauk SSSR, Neorganicheskie Materialy, 1974. 10 (8). 1468-1471. ISSN   0002-337X.
  3. 1 2 Janiak, Christoph; Meyer, Hans-Jürgen; Gudat, Dietrich; Alsfasser, Ralf (2012-01-27). Riedel Moderne Anorganische Chemie (in German). Walter de Gruyter. ISBN   978-3-11-024901-9.
  4. ↑ "Chemical reactions of Holmium". Webelements. Retrieved 2009-06-06.
  5. ↑ Holmium(III) fluoride at AlfaAesar, accessed on 2023-12-22 ( PDF ) (JavaScript required).
  6. ↑ Sobolev, Boris P. (2001). The rare earth trifluorides Introduction to materials science of multicomponent metal fluoride crystals. Arxius de les seccions. Barcelona: Institut d'Estudis Catalans. ISBN   978-84-7283-610-5.
  7. ↑ Ans, Jean d'; Lax, Ellen (1998). Taschenbuch für Chemiker und Physiker (in German). Springer. ISBN   978-3-540-60035-0.
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