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Lanthanum acetylacetonate

Identifiers
CAS Number	14284-88-9 anhydrous 22392-66-1 dihydrate
3D model (JSmol)	Interactive image
ChemSpider	68023795
EC Number	238-187-8
PubChem CID	131873665
CompTox Dashboard (EPA)	DTXSID201305750
InChI InChI=1S/3C5H7O2.La/c3*1-4(6)3-5(2)7;/h3*3H,1-2H3;/q3*-1;+3Key: UUYNRMJIFVOQCR-UHFFFAOYSA-N
SMILES CC(=O)C(=O)C.CC(=O)C(=O)C.CC(=O)C(=O)C.
Properties
Chemical formula	C15H21LaO6
Molar mass	436.232 g·mol
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335
Precautionary statements	P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references

Lanthanum acetylacetonate refers to the coordination complex with the formula La(C₅H₇O₂)₃. This anhydrous acetylacetonate complex has not been characterized well, but the dihydrate La(C₅H₇O₂)₃(H₂O)₂ has been characterized by X-ray crystallography.

Upon heating under vacuum, the dihydrate converts to the oxo-cluster La₄O(C₅H₇O₂)₁₀. This behavior is also observed for erbium, yttrium, gadolinium, and europium.

The instability constants (logY_n) are 3.65, 5.13 and 6.12 (corresponding to n=1, 2, 3) have been reported for "La(acac)₃". It can be prepared by the reaction of lanthanum alkoxide and acetylacetone. Its tetrahydrate decomposes into monohydrate at 110 °C, obtains the anhydrous form at 150 °C, undergoes La(CH₃COO)(acac)₂ and La(CH₃COO)₂(acac), and at 180~285 °C lanthanum acetate is produced. It can be used to prepare NaLaS₂, La₂Zr₂O₇ and other materials.

References

1. "Lanthanum(3+);pentane-2,4-dione". pubchem.ncbi.nlm.nih.gov.
2. Okawara, Toru; Ishihama, Kohei; Takehara, Kenji (2014). "Redetermination of diaquatris(4-oxopent-2-en-2-olato-κ O,O′)lanthanum(III)". Acta Crystallographica Section E. 70 (7): m258 – m259. doi:10.1107/S1600536814013336. PMC 4120584. PMID 25161523.
3. Phillips, Theodore; Sands, Donald E.; Wagner, William F. (1968). "Crystal and Molecular Structure of Diaquotris(acetylacetonato)lanthanum(III)". Inorganic Chemistry. 7 (11): 2295–2299. doi:10.1021/ic50069a024.
4. Tamang, Sem Raj; Singh, Arpita; Bedi, Deepika; Bazkiaei, Adineh Rezaei; Warner, Audrey A.; Glogau, Keeley; McDonald, Corey; Unruh, Daniel K.; Findlater, Michael (2020). "Polynuclear Lanthanide–Diketonato Clusters for the Catalytic Hydroboration of Carboxamides and Esters". Nat. Catal. 3 (2): 154–162. doi:10.1038/s41929-019-0405-5. S2CID 209897045.
5. Dutt, N.K.; Banyopadhyay, P. (1964-05-01). "Chemistry of the lanthanons—XIII". Journal of Inorganic and Nuclear Chemistry. 26 (5): 729–736. doi:10.1016/0022-1902(64)80316-X. Archived from the original on 2018-06-24. Retrieved 2021-09-20.
6. Gavrilenko, V. V.; Chekulaeva, L. A.; Savitskaya, I. A.; Garbuzova, I. A. Synthesis of yttrium, lanthanum, neodymium, praseodymium and lutetium alkoxides and acetylacetonates(in Russian). Izvestiya Akademi Nauk, Seriya Khimicheskaya, 1992. 11: 2490-2493. ISSN 1026-3500.
7. Hussein, Gamal A.M.; Ismail, Hamdy M. (1995-08-01). "Characterization of lanthanum oxide formed as a final decomposition product of lanthanum acetylacetonate: thermoanalytical, spectroscopic and microscopic studies". Powder Technology. 84 (2): 185–190. doi:10.1016/0032-5910(95)02984-A. Archived from the original on 2018-06-03. Retrieved 2021-09-20.
8. Ding, Yi; Gu, Jun; Zhang, Tao; Yin, An-Xiang; Yang, Lu; Zhang, Ya-Wen; Yan, Chun-Hua (2012-02-15). "Chemoaffinity-Mediated Synthesis of NaRES₂-Based Nanocrystals as Versatile Nano-Building Blocks and Durable Nano-Pigments". Journal of the American Chemical Society. 134 (6): 3255–3264. doi:10.1021/ja211103b. ISSN 0002-7863. PMID 22242812. Archived from the original on 2019-04-20. Retrieved 2021-09-20.
9. Wang, Yang; Kumar, Rishi; Roller, Justin; Maric, Radenka (2017-06-01). "Synthesis and Characterization of Nano-crystalline La₂Zr₂O₇ Film by Reactive Spray Deposition Technology for Application in Thermal Barrier Coatings". MRS Advances. 2 (28): 1519–1525. doi:10.1557/adv.2017.154. ISSN 2059-8521. S2CID 136079675. Retrieved 2021-09-20.

• Lanthanum compounds
• Acetylacetonate complexes