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- Title
Synthesis, Structure and Photoluminescence Properties of Cd and Cd-Ln Pentafluorobenzoates with 2,2′:6′,2′-Terpyridine Derivatives.
- Authors
Shmelev, Maxim A.; Voronina, Julia K.; Evtyukhin, Maxim A.; Dolgushin, Fedor M.; Varaksina, Evgenia A.; Taydakov, Ilya V.; Sidorov, Aleksey A.; Eremenko, Igor L.; Kiskin, Mikhail A.
- Abstract
Six new complexes [Cd(tpy)(pfb)2] (1, tpy = 2,2′:6′,2″-terpyridine), [Ln2Cd2(tpy)2(pfb)10] (Ln = Eu (2Eu), Tb (2Tb)), [Ln2Cd2(tbtpy)2(pfb)10]·2MeCN (Ln = Eu (3Eu), Tb (3Tb), tbtpy = 4,4′,4″-tri-tert-butyl-2,2′:6′,2″-terpyridine), [Eu2Cd2(tppz)(pfb)10]n (4, tppz = 2,3,5,6-tetra-(pyridin-2-yl)pyrazine) based on pentafluorobenzoic acid (Hpfb) have been prepared and investigated. The effect of tridentate ligands on geometry heterometallic scaffolds synthesized complexes is discussed. The supramolecular crystal structures of the new compounds are stabilized by π-π, C-F···π, C-H···O, C-H...F, F....F interactions. Non-covalent interactions have been studied using Hirschfeld surface analysis. The obtained compounds were characterized by single-crystal and powder X-ray diffraction, luminescence spectroscopy, IR spectroscopy, CHN analysis. Complexes 2Ln and 3Ln exhibit metal-centered photoluminescence, but the presence of ligand luminescence bands indicates incomplete energy transfer from the d-block to the lanthanide ion.
- Subjects
RARE earth metals; PHOTOLUMINESCENCE; LUMINESCENCE spectroscopy; X-ray powder diffraction; SURFACE analysis; TERBIUM; PYRAZINES; ENERGY transfer
- Publication
Inorganics, 2022, Vol 10, Issue 11, p194
- ISSN
2304-6740
- Publication type
Article
- DOI
10.3390/inorganics10110194