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Names | |
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Other names
Tris(2,4-pentanedione)praseodymium, Tris(acetylacetonato)praseodymium
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Identifiers | |
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3D model (JSmol)
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ChemSpider | |
ECHA InfoCard | 100.035.076 |
PubChem CID
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CompTox Dashboard (EPA)
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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).
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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]