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Praseodymium acetylacetonate

Names
Other names Tris(2,4-pentanedione)praseodymium, Tris(acetylacetonato)praseodymium
Identifiers
CAS Number	14553-09-4 anhydrous 47313-91-7 dihydrate
3D model (JSmol)	Interactive image
ChemSpider	64879347
ECHA InfoCard	100.035.076
PubChem CID	131848302
CompTox Dashboard (EPA)	DTXSID201207940
InChI InChI=1S/3C5H7O2.Pr/c3*1-4(6)3-5(2)7;/h3*3H,1-2H3;/q3*-1;+3Key: OXMGCUPHEWQXSW-UHFFFAOYSA-N
SMILES CC1=O23(O=C(C)C(C)=O2)(O=C(C)C(C)=O3)O=C(C)1
Properties
Chemical formula	C15H25O8Pr
Molar mass	474.265 g·mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references

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.

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.

Instability constants (logY_n) are 2.89, 4.17 and 5.29 (corresponding to n=1, 2, 3) have been determined for related materials. It can be prepared by the reaction of trialkoxypraseodymium and acetylacetone. 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. It can form the green complex Pr(acac)₃(phen) with o-phenanthroline.

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.

• Praseodymium(III) compounds
• Acetylacetonate complexes