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Anhydrous lanthanum(III) chloride can be produced by the ammonium chloride route. [3] [4] [5] In the first step, lanthanum oxide is heated with ammonium chloride to produce the ammonium salt of the pentachloride: La 2 O 3 + 10 NH 4 Cl → 2 (NH 4) 2 LaCl 5 + 6 H 2 O + 6 NH 3
The anhydrous compound can be produced by heating the hydrates to 300 °C. If heated further, anhydrous lanthanum(III) sulfate decomposes to La 2 O 2 SO 4 at 775 °C, which in turn decomposes to lanthanum(III) oxide at 1100 °C.
Pages in category "Lanthanum compounds" The following 44 pages are in this category, out of 44 total. ... Lanthanum(III) chloride; Lanthanum hydroxide; Lanthanum(III ...
Lanthanum reacts with the halogens at room temperature to form the trihalides, and upon warming will form binary compounds with the nonmetals nitrogen, carbon, sulfur, phosphorus, boron, selenium, silicon and arsenic. [16] [17] Lanthanum reacts slowly with water to form lanthanum(III) hydroxide, La(OH) 3. [33]
The reaction of an intimate mixture of lanthanide oxides with excess ammonium chloride produces anhydrous ammonium salts of the penta- and hexachlorides. Typical reaction conditions are hours at 230-250 °C. [4] Some lanthanides (as well as scandium and yttrium) form pentachlorides: M 2 O 3 + 10 NH 4 Cl → 2 (NH 4) 2 MCl 5 + 3 H 2 O + 6 NH 3
The CuTi 2 structure of the lanthanum, cerium and praseodymium diiodides along with HP-NdI 2 contain 4 4 nets of metal and iodine atoms with short metal-metal bonds (393-386 La-Pr). [10] these compounds should be considered to be two-dimensional metals (two-dimensional in the same way that graphite is). The salt-like dihalides include those of ...
Lanthanide chlorides are a group of chemical compounds that can form between a lanthanide element (from lanthanum to lutetium) and chlorine. The lanthanides in these compounds are usually in the +2 and +3 oxidation states , although compounds with lanthanides in lower oxidation states exist.
Lanthanum(III) iodide is very soluble in water and is deliquescent. [4] Anhydrous lanthanum(III) iodide reacts with tetrahydrofuran to form a photoluminescent complex, LaI 3 (THF) 4, with an average La–I bond length of 3.16 Å. [6] [7] This complex is a starting material for amide and cyclopentadienyl complexes of lanthanum. [6] [8]