Inorganic Chemistry Communication
Inorganic Chemistry Communication
5 years ago

Structures, luminescence and magnetic properties of four phenoxo-O bridged Ln2 compounds: Distinct single-molecule magnets behaviors were observed in two Tb2 compounds

Structures, luminescence and magnetic properties of four phenoxo-O bridged Ln2 compounds: Distinct single-molecule magnets behaviors were observed in two Tb2 compounds
Four new dinuclear lanthanide compounds, [Ln(hfac)2L]2 (Ln(III) = Eu (1) and Tb (2)) and [Ln(tfac)2L]2·(C7H16)x (Ln(III) = Tb (3), Yb (4), HL = 2-[[(4-iodophenyl)imino]methyl]-8-hydroxyquinoline, hfac = hexafluoroacetylacetonate, tfac = trifluoroacetylacetonate), have been synthesized, structurally and magnetically characterized. The X-ray structural analysis exhibit that 1–4 are phenoxo-O-bridged dinuclear compounds and central Ln(III) ions are eight-coordinated with two bidentate hfac− and two μ 2-O bridging 8-hydroxyquinoline Schiff base ligands. Magnetic measurements indicated that slow magnetic relaxation behaviors were observed in 2 under 0 dc field, with an optimized dc field of 2000 Oe for 2, the quantum tunneling of the magnetization was suppressed with ΔE/k B of 6.72 K. However, no evident ac magnetic signals were observed in 3 under 0 dc field. The distinct single-molecule magnets behaviors are mainly due to the slight different coordination environments around central TbIII ions of 2 and 3.

Publisher URL: www.sciencedirect.com/science

DOI: S1387700317308535

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.