Praseodymium acetylacetonate

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/c31-4(6)3-5(2)7;/h33H,1-2H3;/q3*-1;+3 Key: OXMGCUPHEWQXSW-UHFFFAOYSA-N;
	SMILES 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
Chemical formula	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). 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.^[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 (logY_n) 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

^ 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.
^ 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.
^ 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.
^ 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.
^ 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.
^ 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.
^ 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.

[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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