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Europium dichloride can be produced by reducing europium trichloride with hydrogen gas at high temperature: [4] 2 EuCl 3 + H 2 → 2 EuCl 2 + 2 HCl. If dry europium trichloride reacts with lithium borohydride in THF, it can also produce europium dichloride: [5] 2 EuCl 3 + 2 LiBH 4 → 2 EuCl 2 + 2 LiCl + H 2 ↑ + B 2 H 6 ↑
Europium(II) sulfate is the sulfate of divalent europium, which can be obtained by electrolysis of europium sulfate solution with mercury as the cathode, or by reducing europium(III) chloride with zinc amalgam, and then reacting with sulfuric acid. [50]
Otherwise, the main chalcogenides are europium(II) sulfide (EuS), europium(II) selenide (EuSe) and europium(II) telluride (EuTe): all three of these are black solids. Europium(II) sulfide is prepared by sulfiding the oxide at temperatures sufficiently high to decompose the Eu 2 O 3: [41] Eu 2 O 3 + 3 H 2 S → 2 EuS + 3 H 2 O + S
Europium(III) chloride is an inorganic compound with the formula EuCl 3. The anhydrous compound is a yellow solid. Being hygroscopic it rapidly absorbs water to form a white crystalline hexahydrate , EuCl 3 ·6H 2 O, which is colourless.
Europium chloride may refer to: Europium(III) chloride (europium trichloride), EuCl 3; Europium dichloride (europium(II) chloride), EuCl 2 This page was last edited ...
Europium hydride is the most common hydride of europium with a chemical formula EuH 2. In this compound, europium atom is in the +2 oxidation state and the hydrogen atoms are -1. [ 3 ] It is a ferromagnetic semiconductor .
Europium(II) fluoride is a bright yellowish solid with a fluorite structure. [3]EuF 2 can be used to dope a trivalent rare-earth fluoride, such as LaF 3, to create a vacancy-filled structure with increased conductivity over a pure crystal.
Like sodium chloride, it crystallizes cubically in the space group Fm3m with cell parameter a = 575.5 nm with four formula units per unit cell. [8] Europium(III) phosphide tends to form europium(II) oxide (EuO) in air, [9] and pure EuP shows Van Vleck paramagnetism. The vapor pressure of EuP is 133-266.6 Pa at 1273 K. [10]