Polymeric REE coordination compounds based on novel enaminone derivative

K. S. Smirnova, E. A. Ivanova, I. V. Eltsov, I. P. Pozdnyakov, A. A. Russkikh, V. V. Dotsenko, E. V. Lider

Результат исследования: Научные публикации в периодических изданияхстатьярецензирование

Аннотация

A novel enaminone derivative, 2-{[(3-methoxyphenyl)amino]methylene}-5,5-dimethylcyclohexane-1,3-dione (HL) and its lanthanide(III) complexes [Ln(HL)2(NO3)3]n have been prepared. The composition and structure of products have been investigated using IR-spectroscopy, elemental and X-ray diffraction analysis (powder and single-crystal). HOMO/LUMO, as well as triplet state energy has been established by means of DFT calculations. According to the single-crystal X-ray diffraction analysis, the enaminone ligand exhibits bidentate-bridging coordination resulting in polymeric net. All obtained complexes are isomorphous to each other. Photoluminescence of free ligand in polycrystalline state is very low; the quantum yield is only 0.33%, most probably due enhancement of internal conversion in the singlet excited state by the presence of methoxy substituent. Energy transfer from the ligand to lanthanide ions is observed only for europium(III) and, in less extent, samarium(III) complexes.

Язык оригиналаанглийский
Номер статьи116122
ЖурналPolyhedron
Том227
DOI
СостояниеОпубликовано - 15 нояб. 2022

Предметные области OECD FOS+WOS

  • 2.05 ТЕХНОЛОГИЯ МАТЕРИАЛОВ
  • 1.04 ХИМИЧЕСКИЕ НАУКИ

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