Lanthanum acetate

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

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

Lanthanum(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

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

  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.