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RAS Chemistry & Material ScienceЖурнал неорганической химии Russian Journal of Inorganic Chemistry

  • ISSN (Print) 0044-457X
  • ISSN (Online) 3034-560X

SYNTHESIS, STRUCTURE, AND OPTICAL PROPERTIES OF CYCLOMETALATED IRIDIUM(III) COMPLEXES WITH 1,2-DIPHENYLBENZIMIDAZOLE AND N-SUBSTITUTED PERIMIDINES

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PII
S3034560X25090079-1
DOI
10.7868/S3034560X25090079
Publication type
Article
Status
Published
Authors
M.A. Kiseleva
  • Affiliation: Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences
S.I. Bezzubov
  • Affiliation: Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences
Volume/ Edition
Volume 70 / Issue number 9
Pages
1157-1164
Abstract
Two novel bis-cyclometalated iridium(III) complexes with 1,2-diphenylbenzimidazole (pbi) and ancillary 1-methyl-2-(pyridin-2-yl)-1-perimidine (L, complex 1) and ethyl 2-(2-(pyridin-2-yl)-1-perimidin-1-yl)acetate (L, complex 2) were synthesized and characterized by set of physicochemical methods. Comparison of the results of crystal packing analysis and electronic absorption spectroscopy demonstrates that while exclusion of the rigid perimidine system from conjugation does not allow red-shifting of absorption maxima, both complexes exhibit broad absorption up to 600 nm (ε = 27 000 − 800 M cm), comparable to iridium analogs. The results of the study clarify the influence of steric factors on the absorption properties of the complexes and will be used for further development of strongly light-absorbing materials.
Keywords
рентгеноструктурный анализ перимидины электронные спектры
Date of publication
01.09.2025
Year of publication
2025
Number of purchasers
0
Views
28

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