Jump to content

Lanthanum acetate

From Wikipedia, the free encyclopedia
Lanthanum acetate
Names
Other names
lanthanum(3+);acetate, lanthanum triacetate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.011.850 Edit this at Wikidata
EC Number
  • 213-034-8
UNII
  • InChI=1S/3C2H4O2.La/c3*1-2(3)4;/h3*1H3,(H,3,4);/q;;;+3/p-3
    Key: JLRJWBUSTKIQQH-UHFFFAOYSA-K
  • CC(=O)[O-].CC(=O)[O-].CC(=O)[O-].[La+3]
Properties
C6H9LaO6
Molar mass 316.039 g/mol
Appearance colorless crystals
Density g/cm3
soluble
Hazards
GHS labelling:
GHS05: CorrosiveGHS09: Environmental hazard
Danger
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

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]

Synthesis

[edit]

Lanthanum 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

[edit]

Lanthanum(III) acetate forms colorless crystals.

Lanthanum acetate dissolves in water.

Lanthanum acetate forms hydrates of the composition La(CH3COO)3nH2O, where n = 1 and 1.5.[2][3]

Lanthanum acetate and its hydrates decompose when heated.

Uses

[edit]

Lanthanum 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]
  1. ^ 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.
  2. ^ "Lanthanum(III) acetate hydrate | Lanthanum Triacetate Hydrate | C6H11LaO7". Ereztech. Retrieved 20 March 2023.
  3. ^ "15299 Lanthanum(III) acetate sesquihydrate, 99.9% (REO)". Alfa Aesar. Retrieved 20 March 2023.
  4. ^ 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.