Detailed Analysis of the Crystal Structures and Magnetic Properties of a Dysprosium(III) Phthalocyaninato Sextuple-Decker Complex: Weak f–f Interactions Suppress Magnetic Relaxation

Yoji Horii, Keiichi Katoh, Kunihisa Sugimoto, Ryo Nakanishi, Brian K. Breedlove, Masahiro Yamashita

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

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 Dy III -Cd II -phthalocyaninato sextuple-decker complex (Dy 2 Cd 3 ) reveals that the intramolecular Dy−Dy length in Dy 2 Cd 3 is more than 13 Å, which is longer than the intermolecular Dy−Dy length. Even though the two Dy III ions are far apart, intermolecular ferromagnetic dipole–dipole interactions are observed in Dy 2 Cd 3 . From detailed analysis of ac magnetic susceptibilities, quantum tunneling of the magnetization (QTM) in Dy 2 Cd 3 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.

Original languageEnglish
Pages (from-to)3098-3104
Number of pages7
JournalChemistry - A European Journal
Volume25
Issue number12
DOIs
Publication statusPublished - 2019 Feb 26

Keywords

  • crystal structures
  • lanthanoid–lanthanoid interactions
  • magnetic properties
  • quantum chemistry
  • single-molecule magnets

ASJC Scopus subject areas

  • Catalysis
  • Organic Chemistry

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