Samarium(III) acetylacetonate

Samarium(III) acetylacetonate
Identifiers

CAS Number	14589-42-5 anhydrous 1261166-68-0 dihydrate
3D model (JSmol)	Interactive image
ECHA InfoCard	100.035.105
InChI InChI=1S/3C5H7O2.Sm/c31-4(6)3-5(2)7;/h33H,1-2H3;/q3*-1;+3Key: JTZJMDRBZZVNSP-UHFFFAOYSA-N
SMILES CC(=O)C(=O)C.CC(=O)C(=O)C.CC(=O)C(=O)C.
Properties
Chemical formula	C₁₅H₂₁O₆Sm
Molar mass	447.69 g·mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references

Chemical compound

Samarium acetylacetonate is a coordination compound with the formula Sm(C₅H₇O₂)₃. This anhydrous acetylacetonate complex is widely discussed but unlikely to exist per se. The 8-coordinated dihydrate Sm(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. Upon attempted dehydration by heating under vacuum, other hydrated lanthanide tris(acetylacetonate) complexes decompose to give oxo-clusters.

Consistent with the stability of 8-coordinate derivatives is the Sm(C₅H₇O₂)₃(1,10-phenanthroline). Furthermore, recrystallization of the dihydrate from DMSO gives Sm(acac)₃·2DMSO·H₂O.

Samarium(III) acetylacetonate react with N-bromosuccinimide to give the ring-brominated derivative. It reacts with dicobalt octacarbonyl and can be used to prepare SmCo₅.

References

Cheng, Shen; Yuguo, Fan; Yutian, Wang; Guofa, Liu; Pinzhe, Lu (1983). Jilin Daxue Ziran Kex.Xue.(Chin.) (Acta Sci.Nat.Univ.Jil.). 4: 103-102. {{cite journal}}: Missing or empty |title= (help)
Cambridge Crystallographic Data Center, number CCDC 1121251.
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.
Urs, Usha K.; Shalini, K.; Cameron, T. S.; Shivashankar, S. A.; Guru Row, T. N. (2001). "Low-temperature structure of a twinned crystal of tris(2,4-pentanedionato)(1,10-phenanthroline)samarium(III)". Acta Crystallographica Section E. 57 (10): m457 – m458. Bibcode:2001AcCrE..57M.457U. doi:10.1107/S1600536801014398. S2CID 96226655.
Dzyubenko, N. G.; Kalenichenko, Yu. V.; Martynenko, L. I. Rare Earth tris(acetylacetonate) Adducts with DMSO(in Russian). Zhurnal Neorganicheskoi Khimii, 1988. 33 (1): 52-58.
Shankar, Gopalan; Ramalingam, Suthamalli K. (1984). "Phenylisocyanation and bromination studies on lanthanide β-diketonates". Transition Metal Chemistry. 9 (12): 449–453. doi:10.1007/BF00620675. ISSN 0340-4285. S2CID 93106389.
Gu, Hongwei; Xu, Bing; Rao, Jiancun; Zheng, R. K.; Zhang, X. X.; Fung, K. K.; Wong, Catherine Y. C. (2003-05-15). "Chemical synthesis of narrowly dispersed SmCo₅ nanoparticles". Journal of Applied Physics. 93 (10): 7589–7591. Bibcode:2003JAP....93.7589G. doi:10.1063/1.1537697. ISSN 0021-8979. Retrieved 2021-09-20.