In this paper we experimentally study and model the electron donating character of an axial diamagnetic Pd 2+ ion in four metalloligated lanthanide complexes of formula [PPh4][Ln{Pd(SAc)4}2] (SAc -= thioacetate, Ln = Tb, Dy, Ho, and Er). A global model 2 encompassing inelastic neutron scattering, torque magnetometry, and dc magnetometry allows to precisely determine the energy level structure of the complexes. Solid state nuclear magnetic resonance reveals a less donating character of Pd 2+ compared to the previously reported isostructural Pt 2+ -based complexes. Consequently, all complexes invariably show a lower crystal field strength compared to their Pt 2+ -analogues. The dynamic properties show an enhanced single molecule magnet behavior due to the suppression of quantum tunneling, in agreement with our model.

High-resolution inelastic neutron scattering has been used to study low-energy magnetic transitions in a Ho3+ complex. This complex crystallizes in the high-symmetry space group P4/m and has near-perfect D4d symmetry,...

Record-breaking magnetic exchange interactions have previously been reported for 3d-metal dimers of the form [M(Pt(SAc)4)(pyNO2)]2 (M=Ni or Co) that are linked in the solid state via metallophilic Pt···Pt bridges. This...