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- Title
Detailed Analysis of the Crystal Structures and Magnetic Properties of a Dysprosium(III) Phthalocyaninato Sextuple‐Decker Complex: Weak f–f Interactions Suppress Magnetic Relaxation.
- Authors
Horii, Yoji; Katoh, Keiichi; Sugimoto, Kunihisa; Nakanishi, Ryo; Breedlove, Brian K.; Yamashita, Masahiro
- Abstract
In the research field of single‐molecule magnets (SMMs), lanthanoid–lanthanoid interactions, so‐called f–f interactions, are known to affect the SMM properties, although their magnitudes are small. In this article, an SMM with very weak f–f interactions is reported, and the effects of the interactions on the SMM properties are discussed. X‐ray structural analysis of the DyIII‐CdII‐phthalocyaninato sextuple‐decker complex (Dy2Cd3) reveals that the intramolecular Dy−Dy length in Dy2Cd3 is more than 13 Å, which is longer than the intermolecular Dy−Dy length. Even though the two DyIII ions are far apart, intermolecular ferromagnetic dipole–dipole interactions are observed in Dy2Cd3. From detailed analysis of ac magnetic susceptibilities, quantum tunneling of the magnetization (QTM) in Dy2Cd3 is partially suppressed owing to the existence of very weak Dy−Dy interactions. Our results show that even very weak Dy−Dy interactions act as a dipolar bias, suppressing QTM. Single‐molecule magnets: The crystal structures and magnetic properties of a dysprosium(III) phthalocyaninato sextuple‐decker complex (see figure) are determined for the first time. Although two dysprosium(III) ions in the sextuple‐decker complex are distant from each other, very weak magnetic interactions between them have a significant impact on the single‐molecule magnet properties.
- Subjects
METAL complexes; DYSPROSIUM compounds; METAL phthalocyanines; MAGNETIC relaxation; SINGLE molecule magnets
- Publication
Chemistry - A European Journal, 2019, Vol 25, Issue 12, p3098
- ISSN
0947-6539
- Publication type
Article
- DOI
10.1002/chem.201805368