161Dy Time‐Domain Synchrotron Mössbauer Spectroscopy for Investigating Single‐Molecule Magnets Incorporating Dy Ions. Issue 11 (9th January 2019)

• Record Type: Journal Article
• Authors: Scherthan, Lena; Schmidt, Sebastian F. M.; Auerbach, Hendrik; Hochdörffer, Tim; Wolny, Juliusz A.; Bi, Wenli; Zhao, Jiyong; Hu, Michael Y.; Toellner, Tom; Alp, E. Ercan; Brown, Dennis E.; Anson, Christopher E.; Powell, Annie K.; Schünemann, Volker
• Is Part Of: Angewandte Chemie international edition. Volume 58:Issue 11(2019)
• Page Start: 3444
• Page End: 3449
• Publication Date: 2019-01-09
• Subjects: dysprosium -- lanthanides -- magnetic properties -- Mössbauer spectroscopy -- single-molecule magnets; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201810505
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: Time‐domain synchrotron Mössbauer spectroscopy (SMS) based on the Mössbauer effect of 161 Dy has been used to investigate the magnetic properties of a Dy III ‐based single‐molecule magnet (SMM). The magnetic hyperfine field of [Dy(Cy3 PO)2 (H2 O)5 ]Br3 ⋅2 (Cy3 PO)⋅2 H2 O⋅2 EtOH is with B 0 =582.3(5) T significantly larger than that of the free‐ion Dy III with a 6 H15/2 ground state. This difference is attributed to the influence of the coordinating ligands on the Fermi contact interaction between the s and 4f electrons of the Dy III ion. This study demonstrates that 161 Dy SMS is an effective local probe of the influence of the coordinating ligands on the magnetic structure of Dy‐containing compounds. Abstract : A new point of view : The magnetic hyperfine field at the 161 Dy nucleus in Dy‐containing compounds can be determined by 161 Dy time‐domain synchrotron Mössbauer spectroscopy. This quantity is influenced by the polarization of the s electrons at the 161 Dy nucleus via metal–ligand interactions. The effect of different ligands in Dy‐containing single‐molecule magnets can now directly be explored from the viewpoint of the lanthanide ion.