A carboxylate-based dinuclear dysprosium(iii) cluster exhibiting slow magnetic relaxation behaviour

Abstract

Herein, we present a carboxylate-based dinuclear dysprosium compound, namely [Dy₂L₆(MeOH)₂(H₂O)₂] (LH = n-butyric acid) from the reaction of Dy(NO₃)₃·xH₂O with n-butyric acid and triethylamine in MeOH solvent. The single crystal X-ray diffraction analysis demonstrate that a total of six monocarboxylate ligands formed this dimeric compound by carboxylate bridging along with coordination from solvent molecules (water and methanol). Each Dy^III ion is coordinated by nine donor atoms forming a mono-capped antiprismatic coordination environment. Alternating current (AC) magnetic measurements show a frequency dependence of the out-of-phase magnetic susceptibilities (χ′′) indicating a slow relaxation behaviour of the magnetization.