Magnetic properties of monomeric and polymeric stannolediide yttrium and erbium complexes

Lanthanide sandwich complexes are promising candidates for single-molecule magnets, owing to their magnetic anisotropy and slow relaxation of magnetization. Here we show the synthesis and characterization of the polymeric yttrium and erbium complexes ligated by cyclooctatetraendiide and stannolediide ligands. The molecular structures showed the formation of one-dimensional-coordination polymers with the molecular formula of C<sub>40</sub>H<sub>56</sub>KOSi<sub>2</sub>SnLn (Ln = Y, Er), which resemble a trapezoidal wave. Upon encapsulation of the K cations with 2.2.2-cryptand, the respective monomeric sandwich complexes having the molecular formula of C<sub>57</sub>H<sub>87</sub>KN<sub>2</sub>O<sub>6</sub>Si<sub>2</sub>SnLn (Ln = Y, Er) were obtained. The diamagnetic yttrium complexes were characterized by NMR spectroscopy, and the magnetic properties of both Er complexes were studied. The polymeric Er complex demonstrates a lower energy barrier for magnetic relaxation compared to the monomeric erbium complex, despite the similar structural features of the compounds.

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Publication Details

Journal
Communications Chemistry
Published
2025-11-21
DOI
https://doi.org/10.1038/s42004-025-01797-4
Citations
2
Primary Topic
Magnetism in coordination complexes
Type
article
Field-Weighted Citation Impact
0.85

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article

Magnetic properties of monomeric and polymeric stannolediide yttrium and erbium complexes

Xiaofei Sun, Masaichi Saito, Peter W. Roesky, Sören Schlittenhardt et al.
2 citations
Communications Chemistry
Magnetism in coordination complexes
0.85
article

Magnetic properties of monomeric and polymeric stannolediide yttrium and erbium complexes

Xiaofei Sun, Masaichi Saito, Peter W. Roesky, Sören Schlittenhardt, Mario Ruben, Tingting Ruan
article en
2 citations

Abstract

Lanthanide sandwich complexes are promising candidates for single-molecule magnets, owing to their magnetic anisotropy and slow relaxation of magnetization. Here we show the synthesis and characterization of the polymeric yttrium and erbium complexes ligated by cyclooctatetraendiide and stannolediide ligands. The molecular structures showed the formation of one-dimensional-coordination polymers with the molecular formula of C<sub>40</sub>H<sub>56</sub>KOSi<sub>2</sub>SnLn (Ln = Y, Er), which resemble a trapezoidal wave. Upon encapsulation of the K cations with 2.2.2-cryptand, the respective monomeric sandwich complexes having the molecular formula of C<sub>57</sub>H<sub>87</sub>KN<sub>2</sub>O<sub>6</sub>Si<sub>2</sub>SnLn (Ln = Y, Er) were obtained. The diamagnetic yttrium complexes were characterized by NMR spectroscopy, and the magnetic properties of both Er complexes were studied. The polymeric Er complex demonstrates a lower energy barrier for magnetic relaxation compared to the monomeric erbium complex, despite the similar structural features of the compounds.

Communications ChemistryVol. 8(1)
Karlsruhe Institute of Technology (DE), Goethe University Frankfurt (DE), Centre National de la Recherche Scientifique (FR), Institut de Science et d'Ingénierie Supramoléculaires (FR), Kerntechnische Entsorgung Karlsruhe (Germany) (DE), Institute of Nanotechnology (GB), Saitama University (JP)
Deutsche Forschungsgemeinschaft
Openalex Percentile: Top 24%
Magnetism in coordination complexes
0.85
DOIOpen Access PDFOpenAlex
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