| Identifiers | |
|---|---|
3D model (JSmol) | |
| ECHA InfoCard | 100.031.494 |
| EC Number |
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PubChem CID | |
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| Properties | |
| Er2Se3 | |
| Molar mass | 571.431 g·mol−1 |
| Appearance | green-brown [1] or yellow crystals [2] |
| Density | 6.83 g·cm−3 [1] 6.855 g·cm−3 [2] |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
Erbium(III) selenide is an inorganic compound with a chemical formula of Er2Se3.
Erbium(III) selenide can be obtained by the reaction of erbium and selenium:
It can also be prepared by reacting erbium oxide and hydrogen selenide at high temperature. [3]
Erbium(III) selenide is an orthorhombic crystal with a Sc2S3 structure and a space group of Fddd. [2] It reacts with magnesium selenide at 1000 °C to obtain MgEr2Se4. [4]
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.
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.
Manganese(II) chloride is the dichloride salt of manganese, MnCl2. This inorganic chemical exists in the anhydrous form, as well as the dihydrate (MnCl2·2H2O) and tetrahydrate (MnCl2·4H2O), with the tetrahydrate being the most common form. Like many Mn(II) species, these salts are pink, with the paleness of the color being characteristic of transition metal complexes with high spin d5 configurations.
Erbium(III) chloride is a violet solid with the formula ErCl3. It is used in the preparation of erbium metal.
Yttrium(III) bromide is an inorganic compound with the chemical formula YBr3. It is a white solid. Anhydrous yttrium(III) bromide can be produced by reacting yttrium oxide or yttrium(III) bromide hydrate and ammonium bromide. The reaction proceeds via the intermediate (NH4)3YBr6. Another method is to react yttrium carbide (YC2) and elemental bromine. Yttrium(III) bromide can be reduced by yttrium metal to YBr or Y2Br3. It can react with osmium to produce Y4Br4Os.
Yttrium arsenide is an inorganic compound of yttrium and arsenic with the chemical formula YAs. It can be prepared by reacting yttrium and arsenic at high temperature. Some literature has done research on the eutectic system of it and zinc arsenide.
Iodosilane is a chemical compound of silicon, hydrogen, and iodine. It is a colorless monoclinic crystal of space group P21/c at −157 °C.
Praseodymium(III) fluoride is an inorganic compound with the formula PrF3, being the most stable fluoride of praseodymium.
Erbium(III) fluoride is the fluoride of erbium, a rare earth metal, with the chemical formula ErF3. It can be used to make infrared light-transmitting materials and up-converting luminescent materials.
Europium compounds are compounds formed by the lanthanide metal europium (Eu). In these compounds, europium generally exhibits the +3 oxidation state, such as EuCl3, Eu(NO3)3 and Eu(CH3COO)3. Compounds with europium in the +2 oxidation state are also known. The +2 ion of europium is the most stable divalent ion of lanthanide metals in aqueous solution. Many europium compounds fluoresce under ultraviolet light due to the excitation of electrons to higher energy levels. Lipophilic europium complexes often feature acetylacetonate-like ligands, e.g., Eufod.
Dysprosium(III) bromide is an inorganic compound of bromine and dysprosium, with the chemical formula of DyBr3.
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.
Lutetium compounds are compounds formed by the lanthanide metal lutetium (Lu). In these compounds, lutetium generally exhibits the +3 oxidation state, such as LuCl3, Lu2O3 and Lu2(SO4)3. Aqueous solutions of most lutetium salts are colorless and form white crystalline solids upon drying, with the common exception of the iodide. The soluble salts, such as nitrate, sulfate and acetate form hydrates upon crystallization. The oxide, hydroxide, fluoride, carbonate, phosphate and oxalate are insoluble in water.
Erbium acetylacetonate is a coordination compound, with the chemical formula of Er(C5H7O2)3, or Er(acac)3 for short. It can be prepared by the reaction of metal erbium or erbium trihydride and acetylacetone. Erbium chloride could also react with ammonium acetylacetonate to obtain erbium acetylacetonate, which can be recrystallized in toluene. Its anhydrous form is stable in dry atmosphere and forms a hydrate in humid air. The anhydrous form cannot be obtained by heating the hydrate in humid atmosphere. It begins to decompose at 190 °C, and erbium oxide can be obtained by continuous heating at 505 °C.
Lutetium(III) selenide is an inorganic compound with the chemical formula Lu2Se3.
Thulium(III) selenide is an inorganic compound with the chemical formula Tm2Se3.
Holmium(III) selenide is an inorganic compound with the chemical formula Ho2Se3.
Strontium selenide is an inorganic compound with the chemical formula SrSe.
Germanium diselenide is an inorganic compound, with the chemical formula of GeSe2.
Erbium(III) selenate is an inorganic compound, with the chemical formula Er2(SeO4)3. It exists as an anhydrate or an octahydrate.
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