Praseodymium acetylacetonate

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Praseodymium acetylacetonate
Pr(acac)3(H2O)2.svg
Names
IUPAC name
Tris(acetylacetonato)praseodymium(III)
Systematic IUPAC name
Tris[(Z)-4-oxopent-2-en-2-olato-κ2O,O′]praseodymium(III)
Other names
Tris(2,4-pentanedione)praseodymium, Tris(acetylacetonato)praseodymium
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.035.076 OOjs UI icon edit-ltr-progressive.svg
PubChem CID
  • InChI=1S/3C5H7O2.Pr/c3*1-4(6)3-5(2)7;/h3*3H,1-2H3;/q3*-1;+3
    Key: OXMGCUPHEWQXSW-UHFFFAOYSA-N
  • CC1=O[Pr+3]23(O=C(C)[CH-]C(C)=O2)(O=C(C)[CH-]C(C)=O3)O=C(C)[CH-]1
Properties
C15H25O8Pr
Molar mass 474.265 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Praseodymium acetylacetonate is a coordination complex with the formula Pr(C3H7O2)3. This purported anhydrous acetylacetonate complex is widely discussed but only the dihydrate Pr(C3H7O2)3(H2O)2 has been characterized by X-ray crystallography. [1] [2]

Upon heating under vacuum, other dihydrated lanthanide trisacetylacetonates convert to oxo-clusters M4O(C5H7O2)10. This result suggests that anhydrous Pr(O2C5H7)3 may not exist. [3]

Instability constants (logYn) are 2.89, 4.17 and 5.29 (corresponding to n=1, 2, 3) have been determined for related materials. [4] It can be prepared by the reaction of trialkoxypraseodymium and acetylacetone. [5] When praseodymium chloride reacts with sodium acetylacetonate or lithium acetylacetonate in the solid phase, praseodymium acetylacetonate can also be obtained, but NaPr(acac)4 or LiPr(acac)4 will also be generated. [6] It can form the green complex Pr(acac)3(phen) with o-phenanthroline. [7]

References

  1. ↑ 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.
  2. ↑ Shen, Cheng; Fan, Yuguo; Wang, Yutian; Liu, Guofa; Lu, Pinzhe (1983). "Crystal and Molecular Structures of Praseodymium and Samarium Acetylacetonate Dihydrate". Jilin Daxue Ziran Kexue Xuebao. 2: 103-8.
  3. ↑ 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: 154–162. doi:10.1038/s41929-019-0405-5.
  4. ↑ N.K. Dutt; P. Banyopadhyay (May 1964). "Chemistry of the lanthanons—XIII". Journal of Inorganic and Nuclear Chemistry. 26 (5): 729–736. doi:10.1016/0022-1902(64)80316-X.
  5. ↑ Gavrilenko, V. V.; Chekulaeva, L. A.; Savitskaya, I. A.; Garbuzova, I. A. (1992). "Synthesis of yttrium, lanthanum, neodymium, praseodymium and lutetium alkoxides and acetylacetonates". Izvestiya Akademi Nauk, Seriya Khimicheskaya (in Russian). 11: 2490–2493. ISSN   1026-3500.
  6. ↑ Zaitseva, I. G.; Kuz'mina, N. P.; Martynenko, L. I.; Makhaev, V. D.; Borisov, A. P. (1998). "Preparation of anhydrous praseodymium acetylacetonates by a solid-state mechanochemical method". Zhurnal Neorganicheskoi Khimii (in Russian). 43 (5): 805–807. ISSN   0044-457X.
  7. ↑ P. C. Christidis; I. A. Tossidis; D. G. Paschalidis; L. C. Tzavellas (1998-09-15). "Tris(acetylacetonato)(1,10-phenanthroline)cerium(III) and Tris(acetylacetonato)(1,10-phenanthroline)praseodymium(III)". Acta Crystallographica Section C Crystal Structure Communications. 54 (9): 1233–1236. Bibcode:1998AcCrC..54.1233C. doi:10.1107/S0108270198003898. ISSN   0108-2701.
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