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Open AccessArticle

Relationship between the Coordination Geometry and Spin Dynamics of Dysprosium(III) Heteroleptic Triple-Decker Complexes

1
Department of Chemistry, Graduate School of Science, Tohoku University, Aramaki-Aza-Aoba, Aoba-ku, Sendai 980-8578, Japan
2
Institute for Materials Research, Tohoku University, 2–1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
3
Advanced Institute for Materials Research, Tohoku University, 2–1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
4
School of Materials Science and Engineering, Nankai University, Tianjin 300350, China
*
Authors to whom correspondence should be addressed.
Magnetochemistry 2019, 5(4), 65; https://doi.org/10.3390/magnetochemistry5040065
Received: 10 August 2019 / Revised: 18 November 2019 / Accepted: 22 November 2019 / Published: 26 November 2019
When using single molecule magnets (SMMs) in spintronics devices, controlling the quantum tunneling of the magnetization (QTM) and spin-lattice interactions is important. To improve the functionality of SMMs, researchers have explored the effects of changing the coordination geometry of SMMs and the magnetic interactions between them. Here, we report on the effects of the octa-coordination geometry on the magnetic relaxation processes of dinuclear dysprosium(III) complexes in the low-temperature region. Mixed ligand dinuclear Dy3+ triple-decker complexes [(TPP)Dy(Pc)Dy(TPP)] (1), which have crystallographically equivalent Dy3+ ions, and [(Pc)Dy(Pc)Dy(TPP)] (2), which have non-equivalent Dy3+ ions, (Pc2− = phthalocyaninato; TPP2− = tetraphenylporphyrinato), undergo dual magnetic relaxation processes. This is due to the differences in the ground states due to the twist angle (φ) between the ligands. The relationship between the off-diagonal terms and the dual magnetic relaxation processes that appears due to a deviation from D4h symmetry is discussed. View Full-Text
Keywords: Dy3+ ion; triple-decker; spin dynamics; octa-coordination geometry Dy3+ ion; triple-decker; spin dynamics; octa-coordination geometry
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Sato, T.; Matsuzawa, S.; Katoh, K.; Breedlove, B.K.; Yamashita, M. Relationship between the Coordination Geometry and Spin Dynamics of Dysprosium(III) Heteroleptic Triple-Decker Complexes. Magnetochemistry 2019, 5, 65.

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