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Germanium dioxide – GeO 2; Gold(III) oxide – Au 2 O 3; Hafnium dioxide – HfO 2; Holmium(III) oxide – Ho 2 O 3; Indium(I) oxide – In 2 O; Indium(III) oxide – In 2 O 3; Iodine pentoxide – I 2 O 5; Iridium(IV) oxide – IrO 2; Iron(II) oxide – FeO; Iron(II,III) oxide – Fe 3 O 4; Iron(III) oxide – Fe 2 O 3; Lanthanum(III) oxide ...
The La 3+ metal atoms are surrounded by a 7 coordinate group of O 2− atoms, the oxygen ions are in an octahedral shape around the metal atom and there is one oxygen ion above one of the octahedral faces. [4] On the other hand, at high temperatures lanthanum oxide converts to a C-M 2 O 3 cubic crystal structure.
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 ore, after being crushed and ground, is first treated with hot concentrated sulfuric acid, evolving carbon dioxide, hydrogen fluoride, and silicon tetrafluoride: the product is then dried and leached with water, leaving the early lanthanide ions, including lanthanum, in solution. [52]
Pages in category "Lanthanum compounds" The following 44 pages are in this category, out of 44 total. ... Lanthanum(III) iodide; Lanthanum(III) nitrate; Lanthanum oxide;
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 ...
The ammonium chloride route refers to a general procedure to produce anhydrous lanthanide chlorides. The method has the advantages of being general for the 14 lanthanides and it produces air-stable intermediates that resist hydrolysis. The use of ammonium chloride as a reagent is convenient because the salt is anhydrous, even when handled in air.
Lanthanum carbonate, La 2 (C O 3) 3, is the salt formed by lanthanum(III) cations and carbonate anions. It is an ore of lanthanum metal ( bastnäsite ), along with monazite . Chemistry