Dy, Tb, Gd and Eu complexes with low melting point and magnetic behavior

Cláudia C L Pereira, Joana T. Coutinho, Laura C J Pereira, João Paulo Leal, César A T Laia, Bernardo Monteiro

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

Three new complexes based on lanthanide(III) tetrakis(β-diketonate) with a tetraalkylphosphonium as counterion [P6,6,6,14][Ln(NTA)4] (Ln = Dy (1), Tb (2), Gd (3); NTA = naphthoyltrifluoroacetone; P6,6,6,14 = trihexyl(tetradecyl)phosphonium) were synthesized. The complexes were fully characterized and their spectroscopic, thermal and magnetic properties were evaluated, together with the Eu (4) analogue. The Dy (1) compound showed solvatochromic properties, the Tb (2) compound presented an unprecedented solid state polymorphism never observed in an organometallic compound and all complexes presented paramagnetic behavior with no interactions between the magnetic moments.

Original languageEnglish
Pages (from-to)42-46
Number of pages5
JournalPolyhedron
Volume91
DOIs
Publication statusPublished - 8 May 2015

Keywords

  • Ionic liquids
  • Lanthanides
  • Magnetism
  • Solid state polymorphism
  • Solvatochromism

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