Samarium(III) perchlorate

Samarium(III) perchlorate is an inorganic compound with the chemical formula Sm(ClO₄)₃.

Samarium(III) perchlorate

Identifiers
CAS Number	13569-60-3 Y
3D model (JSmol)	Interactive image hexahydrate: Interactive image
PubChem CID	hexahydrate: 132276547
InChI hexahydrate: InChI=1S/3ClHO4.6H2O.Sm/c3*2-1(3,4)5;;;;;;;/h3*(H,2,3,4,5);6*1H2;/q;;;;;;;;;+3/p-3 Key: IKKRFRFOUOWDEA-UHFFFAOYSA-K
SMILES [O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O.[Sm+3] hexahydrate: O.O.O.O.O.O.[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O.[Sm+3]
Properties
Chemical formula	Cl3O12Sm
Molar mass	448.70 g·mol−1
Appearance	white solid[1] pale yellow crystals[2]
Solubility in water	soluble in water and ethanol[2]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Preparation

Samarium(III) perchlorate can be obtained by the reaction of perchloric acid and samarium(III) oxide.^[3] The hydrate precipitated from the solution can be dehydrated with dichlorine hexoxide to obtain the anhydrous form.^[1]

Properties

Anhydrous samarium(III) perchlorate forms hexagonal crystals, space group P63/m, unit cell parameters a=9.259 Å, c=5.746 Å, Z=2.^[4] It reacts with ammonium thiocyanate and 1-butyl-3-methylimidazolium thiocyanate ([BMIM]SCN) in absolute ethanol to obtain the ionic liquid [BMIM]₄[Sm(NCS)₇(H₂O)].^[5]

References

1. Favier, Frédéric; Pascal, Jean-Louis (1992). "Synthesis and structural analysis of a homogeneous series of anhydrous rare-earth-metal perchlorates". Journal of the Chemical Society, Dalton Transactions (13): 1997–2002. doi:10.1039/dt9920001997. ISSN 0300-9246.
2. Macintyre, Jane E. (23 July 1992). Dictionary of Inorganic Compounds. CRC Press. pp. 2930–. ISBN 978-0-412-30120-9.
3. Wickleder, Mathias S.; Schäfer, Wolfgang (Feb 1999). "Synthesis and Structure of Anhydrous Rare-Earth Perchlorates M(ClO4)3 (M = La, Ce-Er, Y): Derivatives of the UCl3 Type of Structure". Zeitschrift für anorganische und allgemeine Chemie (in German). 625 (2): 309–312. doi:10.1002/(SICI)1521-3749(199902)625:2<309::AID-ZAAC309>3.0.CO;2-6. ISSN 0044-2313.
4. Pascal, J.L.; Favier, F.; Cunin, F.; Fitch, A.; Vaughan, G. (Sep 1998). "Crystalline and Molecular Structures of Anhydrous Lanthanide PerchloratesLn(ClO4)3 with Ln=La, Ce, Pr, Sm, Eu, Ho, Er, Tm, and Lu". Journal of Solid State Chemistry. 139 (2): 259–265. Bibcode:1998JSSCh.139..259P. doi:10.1006/jssc.1998.7838.
5. Nockemann, Peter; Thijs, Ben; Postelmans, Niels; Van Hecke, Kristof; Van Meervelt, Luc; Binnemans, Koen (2006-10-01). "Anionic Rare-Earth Thiocyanate Complexes as Building Blocks for Low-Melting Metal-Containing Ionic Liquids". Journal of the American Chemical Society. 128 (42): 13658–13659. doi:10.1021/ja0640391. ISSN 0002-7863. PMID 17044672. S2CID 34311500.