Binuclear and trinuclear 3d-metal complexes of HATNA and HAT(CN)6 with unique magnetic behavior: from extremely strong antiferromagnetic coupling to opposite sign of zero-field splitting in the same complex

Key Points

• This research aims to explore the magnetic behavior of binuclear and trinuclear complexes formed with specific ligands.
• Synthesis of anionic bi- and trinuclear complexes of Co(II), Fe(II), and Mn(II) with HATNA and HAT(CN)6.
• Composition included paramagnetic Cp*2Fe+ cations (S=1/2).
• Characterization of magnetic properties through observed phenomena.
• Demonstrated extremely strong antiferromagnetic coupling.
• Observed unique zero-field splitting with opposite signs within the same complex.
• Revealed complex interactions among the metal ions and ligands.