Exploration of SMM behavior of Ln2 complexes derived from thianaphthene-2-carboxylic acid

Soumava Biswas, Leena Mandal, Yongbing Shen, Masahiro Yamashita

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9 Citations (Scopus)

Abstract

Two lanthanide-based dinuclear complexes [LnIII(L)3(DMF)(H2O)]2 (Ln = DyIII (1)/TbIII (2)) derived from thianaphthene-2-carboxylic acid have been synthesized and characterized in detail. Single-crystal XRD analyses confirm that the centro-symmetric discrete dimeric structures contain eight-coordinated lanthanide centers with biaugmented trigonal prism geometry in the complexes. Magnetic studies reveal the presence of antiferromagnetic interaction as well as thermal depopulation of Stark sublevels with a decrease in temperature for both complexes, whereas prominent field-induced single-molecule magnet behavior was observed for 1. Also, an isostructural yttrium-based complex (3) and a magnetically dilute sample of complex 1 (1′) have been prepared for magnetic dilution study. 1′ shows a combination of Orbach and Raman relaxation processes with effective energy barrier ΔE = 19.508 cm-1 and relaxation time τo = 9.710 × 10-10 s.

Original languageEnglish
Pages (from-to)14096-14102
Number of pages7
JournalDalton Transactions
Volume48
Issue number37
DOIs
Publication statusPublished - 2019

ASJC Scopus subject areas

  • Inorganic Chemistry

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