Lanthanum acetylacetonate

Source: Wikipedia, the free encyclopedia.
Lanthanum acetylacetonate
Identifiers
3D model (
JSmol
)
ChemSpider
EC Number
  • 238-187-8
  • InChI=1S/3C5H7O2.La/c3*1-4(6)3-5(2)7;/h3*3H,1-2H3;/q3*-1;+3
    Key: UUYNRMJIFVOQCR-UHFFFAOYSA-N
  • CC(=O)[CH-]C(=O)C.CC(=O)[CH-]C(=O)C.CC(=O)[CH-]C(=O)C.[La+3]
Properties
C15H21LaO6
Molar mass 436.232 g·mol−1
Hazards
GHS labelling:[1]
GHS07: Exclamation mark
Warning
H315, H319, H335
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 [77 °F], 100 kPa).

Lanthanum acetylacetonate refers to the

acetylacetonate complex has not been characterized well, but the dihydrate La(C5H7O2)3(H2O)2 has been characterized by X-ray crystallography.[2][3]

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.[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". pubchem.ncbi.nlm.nih.gov.
  2. PMID 25161523
    .
  3. doi:10.1021/ic50069a024
    .
  4. S2CID 209897045
    .
  5. doi:10.1016/0022-1902(64)80316-X. Archived from the original
    on 2018-06-24. Retrieved 2021-09-20.
  6. ISSN 1026-3500
    .
  7. doi:10.1016/0032-5910(95)02984-A. Archived from the original
    on 2018-06-03. Retrieved 2021-09-20.
  8. PMID 22242812. Archived from the original
    on 2019-04-20. Retrieved 2021-09-20.
  9. S2CID 136079675
    . Retrieved 2021-09-20.
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