Front Cover: Synthesis and Magnetism of Co2III₂^IIICo5II₅^II and Co2III₂^IIICo6II₆^II Complexes, and the Role of the Free Choice of Local Coordinate Frames for Interpreting Magnetic Parameters (Eur. J. Inorg. Chem. 12/2026)

Key Points

• This research aims to analyze the magnetic properties of CoII-based cluster systems and how coordinate frames influence their interpretation.
• Analyzed magnetic properties of two polynuclear CoII-based cluster systems.
• Utilized various coordinate frames for individual CoII centers.
• Developed models based on chosen coordinate frames to interpret magnetic behaviour.
• The choice of coordinate frames significantly affects the modelling of magnetic properties.
• Successful modelling was achieved by selecting appropriate frames for CoII centers.