Chemistry:Lanthanum acetylacetonate

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Lanthanum acetylacetonate
Names
IUPAC name
Tris(acetylacetonato)lanthanum(III)
Systematic IUPAC name
Tris[(Z)-4-oxopent-2-en-2-olato-κ2O,O′]lanthanum(III)
Identifiers
3D model (JSmol)
ChemSpider
EC Number
  • 238-187-8
Properties
C15H21LaO6
Molar mass 436.232 g·mol−1
Hazards
GHS pictograms GHS07: Harmful
GHS Signal word Warning
H315, H319, H335
P261, P264, P264+265Script error: No such module "Preview warning".Category:GHS errors, P271, P280, P302+352, P304+340, P305+351+338, P319Script error: No such module "Preview warning".Category:GHS errors, P321, P332+317Script error: No such module "Preview warning".Category:GHS errors, P337+317Script error: No such module "Preview warning".Category:GHS errors, P362+364Script error: No such module "Preview warning".Category:GHS errors, P403+233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Lanthanum acetylacetonate refers to the coordination complex with the formula La(C
5H
7O
2)
3. This anhydrous acetylacetonate complex has not been characterized well, but the dihydrate La(C
5H
7O
2)
3(H
2O)
2 has been characterized by X-ray crystallography.[2][3]

Upon heating under vacuum, the dihydrate converts to the oxo-cluster La
4O(C
5H
7O
2)
10. This behavior is also observed for erbium, yttrium, gadolinium, and europium.[4]

The instability constants (logYn) are 3.65, 5.13 and 6.12 (corresponding to n=1, 2, 3) have been reported for "La(acac)3".[5] It can be prepared by the reaction of lanthanum alkoxide and acetylacetone.[6] 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.[7] It can be used to prepare NaLaS2, La2Zr2O7 and other materials.[8][9]

References

  1. ↑ "Lanthanum(3+);pentane-2,4-dione" (in en). https://pubchem.ncbi.nlm.nih.gov/compound/131873665#section=Safety-and-Hazards. 
  2. ↑ Okawara, Toru; Ishihama, Kohei; Takehara, Kenji (2014). "Redetermination of diaquatris(4-oxopent-2-en-2-olato-κ2 O,O′)lanthanum(III)". Acta Crystallographica Section E 70 (7): m258–m259. doi:10.1107/S1600536814013336. 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. et al. (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. 
  5. ↑ Dutt, N.K.; Banyopadhyay, P. (1964-05-01). "Chemistry of the lanthanons—XIII" (in en). Journal of Inorganic and Nuclear Chemistry 26 (5): 729–736. doi:10.1016/0022-1902(64)80316-X. https://linkinghub.elsevier.com/retrieve/pii/002219026480316X. 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" (in en). Powder Technology 84 (2): 185–190. doi:10.1016/0032-5910(95)02984-A. https://linkinghub.elsevier.com/retrieve/pii/003259109502984A. 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" (in en). Journal of the American Chemical Society 134 (6): 3255–3264. doi:10.1021/ja211103b. ISSN 0002-7863. PMID 22242812. https://pubs.acs.org/doi/10.1021/ja211103b. 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" (in en). MRS Advances 2 (28): 1519–1525. doi:10.1557/adv.2017.154. ISSN 2059-8521. http://link.springer.com/10.1557/adv.2017.154. Retrieved 2021-09-20. 

Template:Acetylacetonate complexes



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