The Divalent Lanthanoid Triflates Ln(CF3SO3)2(CH3CN) (Ln=Sm, Eu): Structure, Luminescence, and Magnetism

• Published in: Chemistry : a European journal 2024-04, Vol.30 (24), p.e202400462-n/a
• Main Authors: Flosbach, Niko T., Rasche, Bertold, Rochels, Leonhard, Disch, Sabrina, Wickleder, Claudia, Adlung, Matthias, Fischer, Pia, Wickleder, Mathias S.
• Format: Article
• Language: English
• Subjects: Acetonitrile; Crystal Structure; Cyclin-dependent kinase inhibitor p21; Divalent Lanthanoides; Heavy metals; Luminescence; Magnetic measurement; Magnetism; Samarium; Spectroscopy; Strontium; Strontium carbonate; Strontium compounds; Thermal analysis; Triflates; Triflic acid; X-ray diffraction
• ISSN: 0947-6539; 1521-3765
• DOI: 10.1002/chem.202400462

The reaction of the trivalent lanthanoide triflates Ln(OTf)3 (Ln=Sm, Eu; OTf=CF3SO3−) with the respective metals in acetonitrile leads to the Ln(II)‐triflates Eu(OTf)2(CH3CN) (monoclinic, P21/n, Z=4, a=1053.54(1), b=610.28(5), c=1946.92(2) pm, β =98.611(4)) and Sm(OTf)2(CH3CN) (monoclinic, P21/n, Z=4, a=1054.41(4), b=612.16(2), c=1952.65(7) pm, β =98.524(2)). The isotypic strontium compound Sr(OTf)2(CH3CN) (monoclinic, P21/n, Z=4, a=1056.39(5), b=610.05(3), c=1950.1(1) pm, β =98.900(2)°) has been obtained from SrCO3 and triflic acid. The compounds have been investigated by X‐ray diffraction, vibrational spectroscopy, luminescence spectroscopy, cyclic voltammetry, thermal analysis, and magnetic measurements. The divalent lanthanoide triflates Ln(OTf)2(CH3CN) (Ln=Sm, Eu) were prepared from the respective trivalent triflates an the metals in acetonitrile. The new salts were characterized comprehensively including luminescence spectroscopy and magnetic measurements.