Structure and spectral properties of cationic lanthanide(III) complexes with carbacylamidophosphate (CAPh) ligand and tetraphenylborate-ion as counterion

Struhatska, Mariia B.; Olyshevets, Iryna; Kariaka, Nataliia S.; Dyakonenko, Viktoriya V.; Konovalova, Irina S.; Shishkina, Svitlana V.; Smola, S. S.; Русакова, Н. В.; Оvchynnikov, Vladimir A.; Sliva, Tatiana Yu.; Amirkhanov, Vladimir M.

doi:10.1016/j.ica.2022.120844

Cited by 7 publications

(3 citation statements)

References 30 publications

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“…The emission lifetime was measured by monitoring the most intense terbium transition 5 D 4 → 7 F 5 and was found to be equal to 2.0–2.2 ms, depending on the excitation wavelength (320 and 290 nm, respectively). The obtained values are among the highest values known for mixed‐ligand CAPh‐based tris ‐complexes [17,28,39] and significantly higher compared to mixed‐ligand terbium complexes with β‐diketones [40–42] . This could be due to reduced high energy vibrations in the chelating fragment of the CAPh compared to β‐diketones.…”

Section: Resultsmentioning

confidence: 80%

“…Several exited states of Dy III ion ( 5 G 11/2 , 5 I 15/2 , and emitting level 4 F 9/2 ) can receive energy from organic ligands, while for the terbium complex the receiving state is exactly an emitting level 5 D 4 . It is interesting to note, that bipy's lowest triplet state is not constant in complexes [Ln(CAPh) 3 bipy] and varies within 22810 to 23809 cm −1 for the reported compounds of this type [17,21,39] . These differences could be due to varying intermolecular interactions depending on CAPh ligand as well as they indicate that some intramolecular coupling between the two ligand chromophores takes place in the mixed chelate.…”

Section: Resultsmentioning

confidence: 87%

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Structure, Thermal Properties and Photoluminescence of Terbium and Dysprosium Mixed‐Ligand Complexes with Dimethyl‐N‐Trichloroacetylamidophosphate and 2,2’‐Bipyridine

Struhatska,

Kariaka,

Dyakonenko

et al. 2024

ChemistrySelect

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Considering the growing interest in lanthanide‐based multifunctional materials two mixed‐ligand complexes [Ln(L)3bipy] (Ln=TbIII, DyIII) with carbacylamidophosphate (CAPh) type ligand – dimethyl‐N‐trichloroacetylamidophosphate (HL) and additional bidentate ligand 2,2’‐bipyridine (bipy) were obtained and studied by X‐ray diffraction study, thermal gravimetric analysis, and luminescence spectroscopy. The obtained complexes are monomeric and isostructural with earlier reported europium analog and crystallizes in the monoclinic system (space group C2/c). They are stable during long‐term storage for at least a couple of years as well as thermally stable up to nearly 200 °C. Both complexes exhibit f–f luminescence upon excitation into the 2,2’‐bipyridine absorption band, being emitters of green (TbIII) and yellow (DyIII) light. The luminescence intensity of the obtained complexes decreases constant exposure to UV radiation for several hours and then stays constant for at least till 32 h.

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Section: Resultsmentioning

confidence: 80%

Section: Resultsmentioning

confidence: 87%

Structure, Thermal Properties and Photoluminescence of Terbium and Dysprosium Mixed‐Ligand Complexes with Dimethyl‐N‐Trichloroacetylamidophosphate and 2,2’‐Bipyridine

Struhatska,

Kariaka,

Dyakonenko

et al. 2024

ChemistrySelect

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“…It has attracted the attention of many chemists. Due to the multiple coordination sites, flexible coordination structures, and unique [Xe]4f n (n = 1-14) electron configuration of lanthanide ions 7 , the structures of complexes using lanthanide ions as central metal ions are very rich, and the chemical properties are very different 8,9 . This makes lanthanide metal complexes used as photocatalysis 10 , luminous diode, light-emitting sensors 11 , fluorescent probes 12 in optics, anti-tumor drugs, and antidepressants in the field of biomedicine 5,13 , and magnetic materials in the field 9,14 of electromagnetism, with a wide range of applications.…”

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confidence: 99%

Construction, Thermochemistry, and Fluorescence Properties of Novel Lanthanide Complexes Synthesized from Halogenated Aromatic Carboxylic Acids and Nitrogen-Containing Ligands

Wang¹,

Xu²,

Ren³

et al. 2022

Acta Physico Chimica Sinica

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In this study, new lanthanide complexes were synthesized via the volatilization method in solution at room temperature. The general molecular formulas for the lanthanide complexes are as follows: [Ln(2,4-DFBA)3(phen)]2 (Ln = Sm 1, Eu 2, and Er 3; 2,4-DFBA = 2,4-difluorobenzoate; and phen = 1,10-phenanthroline), as well as [Ln(2-Cl-6-FBA)2(terpy)(NO3)(H2O)]2 (Ln = Tb 4 and Dy 5; 2-Cl-6-FBA = 2chloro-6-fluorobenzoate; and terpy = 2,2':6'2''-tripyridine). Based on single-crystal Xray analysis, the five complexes exhibited a monoclinic crystal structure belonging to the space group P21/n. Even though complexes 1, 2 (I), and 3 (II) share a general molecular formula, their coordination modes were different. For example, complexes 1 and 2 formed a muffin-like structure with nine coordinated atoms, while complex 3 formed a double hat triangular geometry with eight coordinated atoms. The twodimensional (2D) polyhedral structures of complexes 1 and 2 were formed via weak π-π stacking interactions, whereas complex 3 exhibited a 2D faceted supramolecular structure through C-H•••F hydrogen bonds. Complexes 4 and 5 were isostructural, with the presence of nitrate ions in their structure. This occurred through the C-H•••F hydrogen bonds and π-π stacking of the molecules to form a faceted supramolecular crystal structure. A series of characterizations, such as elemental analysis, infrared and Raman spectroscopy, as well as powder X-ray diffraction, were performed on the five complexes. Thermogravimetry-derivative thermogravimetry-differential scanning calorimetry were performed between 299.25 and 1073.15 K to investigate the mechanism for the thermal decomposition of complexes 1-5. The analysis of the escaping gas stacking maps of the five complexes using thermogravimetric and 3D infrared coupling techniques further confirmed the correctness of the thermal decomposition mechanism of each complex. The results obtained revealed that similar structured complexes follow a similar thermal decomposition mechanism, and the end solid products for all complexes were their corresponding metal oxides. During the irradiation of the Xe lamp, the solid fluorescence of complexes 1, 2, 4, and 5 were measured. The characteristic transition peaks were located at 4 G5/2 → 6 H5/2, 4 G5/2 → 6 H7/2, and 4 G5/2 → 6 H9/2 (1); 5 D0 → 7 F0, 5 D0 → 7 F1, 5 D0 → 7 F2, 5 D0 → 7 F3, and 5 D0 → 7 F4 (2); 5 D4 → 7 F6, 5 D4 → 7 F5, 5 D4 → 7 F4, and 5 D4 → 7 F3 (4); and 4 F9/2 → 6 H15/2, 4 F9/2 → 6 H13/2 (5). The peaks observed indicated the characteristic transitions of Ln(III). The lanthanide complexes exhibited characteristic fluorescence due to this fact, which also explained their characteristic color. Furthermore, the fluorescence lifetimes of complexes 2 and 4 were measured, and their fluorescence decay curves indicated fluorescence lifetimes of 1.288 and 0.648 ms, respectively.

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Polymeric sodium salts and monomeric lanthanide coordination compounds with diphenyl-N-trichloroacetylamidophosphate: synthesis and characterization

Savchuk,

Litsis,

Kariaka

et al. 2024

Inorganica Chimica Acta

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Structure and spectral properties of cationic lanthanide(III) complexes with carbacylamidophosphate (CAPh) ligand and tetraphenylborate-ion as counterion

Cited by 7 publications

References 30 publications

Structure, Thermal Properties and Photoluminescence of Terbium and Dysprosium Mixed‐Ligand Complexes with Dimethyl‐N‐Trichloroacetylamidophosphate and 2,2’‐Bipyridine

Structure, Thermal Properties and Photoluminescence of Terbium and Dysprosium Mixed‐Ligand Complexes with Dimethyl‐N‐Trichloroacetylamidophosphate and 2,2’‐Bipyridine

Construction, Thermochemistry, and Fluorescence Properties of Novel Lanthanide Complexes Synthesized from Halogenated Aromatic Carboxylic Acids and Nitrogen-Containing Ligands

Polymeric sodium salts and monomeric lanthanide coordination compounds with diphenyl-N-trichloroacetylamidophosphate: synthesis and characterization

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