Samarium(III) acetylacetonate

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Samarium(III) acetylacetonate
Identifiers
3D model (JSmol)
ECHA InfoCard 100.035.105 Edit this at Wikidata
  • InChI=1S/3C5H7O2.Sm/c3*1-4(6)3-5(2)7;/h3*3H,1-2H3;/q3*-1;+3
    Key: JTZJMDRBZZVNSP-UHFFFAOYSA-N
  • CC(=O)[CH-]C(=O)C.CC(=O)[CH-]C(=O)C.CC(=O)[CH-]C(=O)C.[Sm+3]
Properties
C15H21O6Sm
Molar mass 447.69 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

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.[1][2] Upon attempted dehydration by heating under vacuum, other hydrated lanthanide tris(acetylacetonate) complexes decompose to give oxo-clusters.[3]

Consistent with the stability of 8-coordinate derivatives is the Sm(C5H7O2)3(1,10-phenanthroline).[4] Furthermore, recrystallization of the dihydrate from DMSO gives Sm(acac)3·2DMSO·H2O.[5]

Samarium(III) acetylacetonate react with N-bromosuccinimide to give the ring-brominated derivative.[6] It reacts with dicobalt octacarbonyl and can be used to prepare SmCo5.[7]

References

  1. ^ 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)
  2. ^ Cambridge Crystallographic Data Center, number CCDC 1121251.
  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.
  4. ^ 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.
  5. ^ 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.
  6. ^ 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.
  7. ^ 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.
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