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Lanthanum acetate is an inorganic compound, a salt of lanthanum with acetic acid with the chemical formula La(CH3CO2)3. According to X-ray crystallography, anhydrous lanthanum acetate is a coordination polymer. Each La(III) center is nine-coordinate, with two bidentate acetate ligands and the remaining sites occupied by oxygens provided by bridging acetate ligands. The praseodymium and holmium compounds are isostructural.[1]
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| Other names
lanthanum(3+);acetate, lanthanum triacetate
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| Identifiers | |
3D model (JSmol)
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| ChemSpider | |
| ECHA InfoCard | 100.011.850 |
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PubChem CID
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CompTox Dashboard (EPA)
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| Properties | |
| C6H9LaO6 | |
| Molar mass | 316.039 g/mol |
| Appearance | colorless crystals |
| Density | g/cm3 |
| soluble | |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Synthesis
editLanthanum acetate can be formed by the reaction of lanthanum(III) oxide and acetic anhydride:
- La2O3 + 3(CH3CO)2O → 2La(CH3COO)3
It is also made in a reaction of lanthanum oxide with 50% acetic acid:
- La2O3 + 6CH3COOH → 2La(CH3COO)3 + 3H2O
Physical properties
editLanthanum(III) acetate forms colorless crystals.
Lanthanum acetate dissolves in water.
Lanthanum acetate forms hydrates of the composition La(CH3COO)3•nH2O, where n = 1 and 1.5.[2][3]
Lanthanum acetate and its hydrates decompose when heated.
Uses
editLanthanum acetate is used in specialty glass manufacturing and in water treatment.
Also, it is used to produce porous lanthanum oxyfluoride (LaOF) films.[4]
It is also used as a component in the production of ceramic products and as a catalyst in the pharmaceutical industry.
References
edit- ^ Lossin, Adalbert; Meyer, Gerd (1994). "Pr(CH3COO)3, ein wasserfreies Selten-Erd-Acetat mit Netzwerkstruktur". Zeitschrift für Anorganische und Allgemeine Chemie. 620 (3). doi:10.1002/zaac.19946200306.
- ^ "Lanthanum(III) acetate hydrate | Lanthanum Triacetate Hydrate | C6H11LaO7". Ereztech. Retrieved 20 March 2023.
- ^ "15299 Lanthanum(III) acetate sesquihydrate, 99.9% (REO)". Alfa Aesar. Retrieved 20 March 2023.
- ^ Shimoda, Tatsuya (5 February 2019). Nanoliquid Processes for Electronic Devices: Developments of Inorganic Functional Liquid Materials and Their Processing. Springer. p. 498. ISBN 978-981-13-2953-1. Retrieved 20 March 2023.