A series of bis(2-phenethyl)dithiophosphinate-based Ln(III) complexes: Synthesis, magnetic and photoluminescent properties

Yuliya A. Bryleva, Alexander V. Artem'ev, Ludmila A. Glinskaya, Vladislav Yu Komarov, Artem S. Bogomyakov, Mariana I. Rakhmanova, Stanislav V. Larionov

Research output: Contribution to journalArticlepeer-review

Abstract

A series of the bis(2-phenethyl)dithiophosphinate-based lanthanide(III) complexes, namely [Ln(phen)L3] (Ln = Sm (1), Eu (2)), Ln(phen)L2(NO3) (Ln = Sm (3), Eu (4), Tb (5)), and Et4N[LnL4] (Ln = Sm (6), Eu (7), Gd (8), Tb (9)), where L = (PhCH2CH2)2PS2, and phen = 1,10-phenanthroline, has been designed and synthesized. The magnetic properties of complexes 1–9 have been investigated in the temperature range of 2–300 K. The μeff(T) and 1/χ(T) dependences of complexes show paramagnetic behavior, which is determined by the Ln3+ ions. For complexes 5 and 9, significant anisotropy results in nonlinear field dependencies of magnetization at 2 K. Complexes 1–7 and 9 exhibit metal-centered luminescence in the solid state at room temperature, whereas complex 8 emits ligand-centered phosphorescence. The maximal quantum efficiency (φf = 53% at 300 K) is observed for the complex Tb(phen)L2(NO3).

Original languageEnglish
Article number120097
Number of pages9
JournalInorganica Chimica Acta
Volume516
Early online date22 Oct 2020
DOIs
Publication statusPublished - 1 Feb 2021

Keywords

  • 1,10-phenanthroline
  • Complexes
  • Dithiophosphinate
  • Lanthanides
  • Magnetic properties
  • Photoluminescence
  • LN
  • PHEN
  • NITRATE
  • CRYSTAL-STRUCTURE
  • TB
  • EU
  • DITHIOCARBAMATE COMPLEXES
  • DY
  • LANTHANIDE
  • SM

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