Lanthanum acetate

Lanthanum acetate

Names
Other names lanthanum(3+);acetate, lanthanum triacetate
Identifiers
CAS Number	917-70-4^Y
3D model (JSmol)	Interactive image
ChemSpider	12923
ECHA InfoCard	100.011.850
EC Number	213-034-8
PubChem CID	13511
UNII	G91Y2QLF3J^N
CompTox Dashboard (EPA)	7061275
InChI InChI=1S/3C2H4O2.La/c3*1-2(3)4;/h3*1H3,(H,3,4);/q;;;+3/p-3 Key: JLRJWBUSTKIQQH-UHFFFAOYSA-K
SMILES CC(=O)[O-].CC(=O)[O-].CC(=O)[O-].[La+3]
Properties
Chemical formula	C6H9LaO6
Molar mass	316.039 g/mol
Appearance	colorless crystals
Density	g/cm^3
Solubility in water	soluble
Hazards
GHS labelling:
Pictograms
Signal word	Danger
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

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.