Synthesis, structure, and photoluminescent properties of lanthanide (Ln = Dy, Tb) chlorides and thiophenolates supported by formamidinate ligands

D. A. Bashirov, D. S. Kolybalov, T. S. Sukhikh, S. N. Konchenko

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

The [Dy(DippForm)2Cl(THF)] (1a) and [Tb(DippForm)2Cl(THF)2] (1b) complexes are synthesized using salt metathesis reactions between lanthanide chlorides and K(DippForm) (DippForm = N,N′-bis(2,6-diisopropylphenyl)formamidinate). In contrast to K(DippForm), a reaction of its less sterically demanding analogue K(MesForm) (MesForm = N,N′-bis(mesityl)formamidinate) with LnCl3 at any ratio of the reagents leads to the formation of the homoligand [Ln(MesForm)3] (Ln = Dy (2a), Tb (2b)) complexes. The [Ln(MesForm)2Cl(THF)] compounds are not isolated. Compounds 1a and 1b are successfully used as starting reagents for the preparation of new thiophenolate complexes [Ln(DippForm)2(SPh)(THF)] (Ln = Dy (3a), Tb (3b)). Crystal structures of compounds 1-3 are determined by single crystal X-ray diffraction. Photoluminescent properties of the complexes obtained are studied. The analysis of the spectra of both DippForm and SPh ligands shows an antenna effect for both Dy(III) and Tb(III). However, MesForm acts as an efficient antenna for Tb(III) rather than Dy(III).

Original languageEnglish
Pages (from-to)1219-1226
Number of pages8
JournalJournal of Structural Chemistry
Volume61
Issue number8
DOIs
Publication statusPublished - 1 Aug 2020

Keywords

  • coordination compounds
  • formamidinates
  • lanthanide
  • luminescence

OECD FOS+WOS

  • 1.04 CHEMICAL SCIENCES

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