Our current research efforts comprise several variations on a theme of elucidating the impacts of non-covalent interactions on electronic structure of paramagnetic complexes, including spin states and magnetic interactions, toward controlling reactivity in base metal-centered complexes. The main focus of this presentation is the solution manipulation of Fe(II) complexes with tripodal imine ligands, toward multimodal control of spin state properties. We find that solvent-dependent speciation and post-synthetic modifications in solution can switch local coordination numbers and geometries, with concomitant spin state changes; variation of concentration and solvent deuteration also play roles in spin crossover properties. The results of structural, spectroscopic (especially <sup>1</sup>H and <sup>19</sup>F NMR), and computational studies will be presented. Time permitting, recent results regarding the interplay of intermolecular interactions and ligand field in other mononuclear first row transition metal complexes will be presented.

New dials for tuning spin crossover

ACS Fall 2021

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.