Tetranuclear Dysprosium(III) Quintuple-Decker Single-Molecule Magnet Prepared Using a π-Extended Phthalocyaninato Ligand with Two Coordination Sites.

Author(s) Katoh, K.; Morita, T.; Yasuda, N.; Wernsdorfer, W.; Kitagawa, Y.; Breedlove, B.K.; Yamashita, M.
Journal Chemistry
Date Published 2018 Sep 04

We report the magnetic properties and spin relaxation processes of a tetranuclear dysprosium(III) fused phthalocyaninato quintuple-decker single-molecule magnet (1) with non-equivalent octacoordination geometries. The structure of 1 is regarded as a dimer of Dy3+-Pc triple-decker SMMs with different magnetic relaxation characteristics corresponding to the octacoordination geometry sites Dy1 with C4 symmetry (φ1 = 23°) and Dy2 with D4d symmetry (φ2 = 45°). In an Hdc of 1750 Oe and T range of 1.8-3.75 K, the quantum tunnelling of the magnetization was suppressed, and the direct process was enhanced. We examine the effects of the coordination geometry on the spin relaxation phenomena.

DOI 10.1002/chem.201804100
ISSN 1521-3765
Citation Chemistry. 2018.

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