English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We report the synthesis and magnetic properties of three new nine-membered Fe(III)-Dy(III) cyclic coordination clusters (CCCs), with a core motif of [Fe 6 Dy 3 (μ-OMe) 9 (vanox) 6 (X-benz) 6 ] where the benzoate ligands are substituted in the para-position with X = F ( 1 ), Cl ( 2 ), Br ( 3 ). Single crystal X-ray diffraction structure analyses show that for the smaller fluorine or chlorine substituents the resulting structures exhibit an isostructural Fe 6 Dy 3  core, whilst the 4-bromobenzoate ligand leads to structural distortions which affect the dynamic magnetic behavior. The magnetic susceptibility and magnetization of  1 - 3  were investigated and show similar behavior in the dc (direct current) magnetic data. Additional ac (alternating current) magnetic measurements show that all compounds exhibit frequency-dependent and temperature-dependent signals in the in-phase and out-of-phase component of the susceptibility and can therefore be described as field-induced SMMs. The fluoro-substituted benzoate cluster  1  shows a magnetic behavior closely similar to that of the corresponding unsubstituted Fe 6 Dy 3  cluster, with U eff  = 21.3 K within the Orbach process. By increasing the size of the substituent toward 4-chlorobenzoate within  2 , an increase of the energy barrier to U eff  = 36.1 K was observed. While the energy barrier becomes higher from  1  to  2 , highlighting that the introduction of different substituents on the benzoate ligand in the  para -position has an impact on the magnetic properties, cluster  3  shows a significantly different SMM behavior where U eff  is reduced in the Orbach regime to only 4.9 K.

The Influence of Halide Substituents on the Structural and Magnetic Properties of Fe6Dy3 Rings