Tuning magnetic interactions between multiple spin carrying metals to elicit desired magnetic/electronic properties has long been a goal in molecular magnetism research. A great deal of this work has focused on exchange coupled clusters where the magnetic ions are weakly coupled through a bridging group. Here, we report on our efforts to understand the relationship between structure and physical properties of multi-metallic compounds with a direct metal-metal bond. To this end, we have performed a combined high frequency electron paramagnetic resonance and variable field <sup>57</sup>Fe Mössbauer spectroscopic investigation of several such compounds with varying spin states and coordination environments. We have rationalized the observed spectroscopic parameters in terms of ligand field theory guided by quantum chemical calculations.

Magnetic resonance investigation of bonding between first row transition metals

255th National Meeting (2018)

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