Custom Coordination Environments for Lanthanoids: Tripodal Ligands Achieve Near-Perfect Octahedral Coordination for Two Dysprosium-Based Molecular Nanomagnets

Inorganic Chemistry 56 (9), 4911 - 4917 (2017)

Custom Coordination Environments for Lanthanoids: Tripodal Ligands Achieve Near-Perfect Octahedral Coordination for Two Dysprosium-Based Molecular Nanomagnets

Kwang Soo Lim, José J. Baldoví, ShangDa Jiang, Bong Ho Koo, Dong Won Kang, Woo Ram Lee, Eui Kwan Koh, Alejandro Gaita-Ariño, Eugenio Coronado, Michael Slota, Lapo Bogani,, Chang Seop Hong

Controlling the coordination sphere of lanthanoid complexes is a challenging critical step toward controlling their relaxation properties. Here we present the synthesis of hexacoordinated dysprosium single-molecule magnets, where tripodal ligands achieve a near-perfect octahedral coordination. We perform a complete experimental and theoretical investigation of their magnetic properties, including a full single-crystal magnetic anisotropy analysis. The combination of electrostatic and crystal-field computational tools (SIMPRE and CONDON codes) allows us to explain the static behavior of these systems in detail.

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http://dx.doi.org/10.1021/acs.inorgchem.6b03118

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