Erbium acetylacetonate

Erbium acetylacetonate
Identifiers
CAS Number	14553-08-3 anhydrous ; 16788-89-9 trihydrate ;
3D model (JSmol)	Interactive image;
	InChI InChI=1S/3C5H7O2.Er/c31-4(6)3-5(2)7;/h33H,1-2H3;/q3*-1;+3 Key: FGQSJRDKBCVFHH-UHFFFAOYSA-N;
	SMILES CC(=O)[CH-]C(=O)C.CC(=O)[CH-]C(=O)C.CC(=O)[CH-]C(=O)C.[Er+3];
Properties
Chemical formula	C15H21ErO6
Molar mass	464.586 g·mol−1
Appearance	pink crystals
Melting point	103 °C (376 K)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Erbium acetylacetonate is a coordination compound with the formula Er(C₅H₇O₂)₃. This anhydrous acetylacetonate complex is often discussed but unlikely to exist per se. The 8-coordinated dihydrate Er(C₅H₇O₂)₃(H₂O)₂ is a more plausible formula based on the behavior of other lanthanide acetylacetonates. The dihydrate has been characterized by X-ray crystallography.^[2]

Upon heating under vacuum, the dihydrate converts to the oxo-cluster Er₄O(C₅H₇O₂)₁₀. This behavior, which is also observed for other lanthanide acetylacetonates, further illustrates the implausibility of six-coordinate Er(C₅H₇O₂)₃.^[3]

References

^ Janice M. Koehler, William G. Bos (December 1967). "A novel synthesis of some anhydrous rare earth acetylacetonates". Inorganic and Nuclear Chemistry Letters. 3 (12): 545–548. doi:10.1016/0020-1650(67)80023-0. Retrieved 2021-09-20.
^ Jiang, Shang-Da; Wang, Bing-Wu; Su, Gang; Wang, Zhe-Ming; Gao, Song (2010). "A Mononuclear Dysprosium Complex Featuring Single-Molecule-Magnet Behavior". Angewandte Chemie International Edition. 49 (41): 7448–7451. doi:10.1002/anie.201004027. PMID 20803599.
^ 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 (2): 154–162. doi:10.1038/s41929-019-0405-5. S2CID 209897045.

[Janice-1] Janice M. Koehler, William G. Bos (December 1967). "A novel synthesis of some anhydrous rare earth acetylacetonates". Inorganic and Nuclear Chemistry Letters. 3 (12): 545–548. doi:10.1016/0020-1650(67)80023-0. Retrieved 2021-09-20.

[2] Jiang, Shang-Da; Wang, Bing-Wu; Su, Gang; Wang, Zhe-Ming; Gao, Song (2010). "A Mononuclear Dysprosium Complex Featuring Single-Molecule-Magnet Behavior". Angewandte Chemie International Edition. 49 (41): 7448–7451. doi:10.1002/anie.201004027. PMID 20803599.

[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 (2): 154–162. doi:10.1038/s41929-019-0405-5. S2CID 209897045.

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