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Neodymium(III) oxide or neodymium sesquioxide is the chemical compound composed of neodymium and oxygen with the formula Nd 2 O 3. It forms very light grayish-blue hexagonal crystals. [ 1 ] The rare-earth mixture didymium , previously believed to be an element , partially consists of neodymium(III) oxide.
Neodymium(III) oxalate is a rose-coloured crystal which decomposes from its decahydrate to its anhydrous form when heated, and when heated further, decomposes to Nd 2 O 2 C 2 O 4, [12] and then finally obtaining neodymium(III) oxide. [13] Neodymium(III) carbonate is the carbonate of neodymium where neodymium exhibits the +3 oxidation state. It ...
Neodymium glass (Nd:glass) is produced by the inclusion of neodymium oxide (Nd 2 O 3) in the glass melt. In daylight or incandescent light neodymium glass appears lavender, but it appears pale blue under fluorescent lighting. Neodymium may be used to color glass in shades ranging from pure violet through wine-red and warm gray. [56]
Neodymium(III) chloride or neodymium trichloride is a chemical compound of neodymium and chlorine with the formula NdCl 3.This anhydrous compound is a mauve-colored solid that rapidly absorbs water on exposure to air to form a purple-colored hexahydrate, NdCl 3 ·6H 2 O. Neodymium(III) chloride is produced from minerals monazite and bastnäsite using a complex multistage extraction process.
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Neodymium nickelate can be prepared by dissolving neodymium(III) oxide and nickel(II) oxide in nitric acid, followed by heating the mixture in an oxygen atmosphere. [2] It can also be prepared by pyrolyzing a mixture of nickel nitrate and neodymium nitrate. [2] [3] It decomposes in high temperature (950 °C) by nitrogen: [2] 4 NdNiO 3 → 2 Nd ...
Neodymium(III) carbonate is an inorganic compound, a salt, where neodymium is in the +3 oxidation state and the carbonate ion has charge -2. [1] It has a chemical formula of Nd 2 (CO 3 ) 3 . The anhydrous form is purple-red, [ 2 ] while the octahydrate is a pink solid. [ 3 ]
Heating neodymium and iodine in an inert atmosphere produces this salt: [citation needed] 2 Nd + 3 I 2 → 2 NdI 3. It can also be prepared by the reaction of neodymium(III) oxide and hydroiodic acid to make a hydrate: [4] Nd 2 O 3 + 6 HI → 2 NdI 3 + 3 H 2 O. The anhydrate can then be obtained by heating the nonahydrate with ammonium iodide: [4]