scholarly journals Спектрально-люминесцентные свойства разнолигандных комплексных соединений европия(III) c o-метоксибензойной кислотой и фосфорсодержащими нейтральными лигандами

2020 ◽  
Vol 128 (6) ◽  
pp. 692
Author(s):  
И.В. Калиновская
Keyword(s):  
Electronic Absorption Spectra ◽  
Mixed Ligand Complex ◽  
Triphenylphosphine Oxide ◽  
Luminescence Spectra ◽  
Ligand Complex ◽  
Excitation Spectra ◽  
Hexamethylphosphoric Triamide ◽  
Europium Ion ◽  
Phosphorus Containing ◽  
Methoxybenzoic Acid

The spectral and luminescent properties of complex compounds of europium (III) with o-methoxybenzoic acid and island-containing phosphorus-containing neutral ligands of the composition Eu (MOBA) 3 • 3Н2О and Eu (MOBA) 3 • L, where MOBA is o-methoxybenzoic acid, D is studied (hexamethylphosphoric triamide), tppo (triphenylphosphine oxide), Et6pa (hexaethylphosphotriamide). It was found that the excitation energy is transferred to the europium ion both from the levels of o-methoxybenzoic acid and from the levels of phosphorus-containing neutral ligands.The electronic absorption spectra, the luminescence excitation spectra, and the Stark structure of 5D0-7Fj (j = 0-2) electronic transitions in the luminescence spectra of mixed-ligand complex europium (III) complex o-methoxybenzoates are analyzed. Europium (III) methoxybenzoate with triphenylphosphine oxide has the highest luminescence intensity.

scholarly journals Спектрально-люминесцентные свойства разнолигандных комплексных соединений европия(III) с n-метилбензойной кислотой

2019 ◽  
Vol 127 (11) ◽  
pp. 765
Author(s):  
И.В. Калиновская ◽  
А.Н. Задорожная
Keyword(s):  
Electronic Absorption Spectra ◽  
Excitation Energy Transfer ◽  
Luminescent Properties ◽  
Triphenylphosphine Oxide ◽  
Luminescence Spectra ◽  
Nitrogen And Phosphorus ◽  
Excitation Spectra ◽  
Stark Structure ◽  
Phosphorus Containing ◽  
Neutral Ligands

Abstract The spectral-luminescent properties of europium(III) complexes with p -methylbenzoic acid and nitrogen- and phosphorus-containing neutral ligands of compositions [Eu( p -MBA)_3 · D]_2 · x H_2O and [Eu( p ‑MBA)_3 · 2H_2O]_ n , where p -MBA is the anion of p -methylbenzoic acid and D is 1,10-phenanthroline (phen), 2,2' dipyridyl (dipy), triphenylphosphine oxide (tppo) ( х = 0), hexamethylphosphortriamide (hmpa) ( x = 1), or benzotriazole (bt) ( x = 2) are studied. The electronic absorption spectra, the luminescence excitation spectra, and the Stark structure of ^5 D _0−^7 F _ j (  j = 0–2) electronic transitions in low-temperature luminescence spectra of complex europium(III) p -methylbenzoates are analyzed. It is found that the excitation energy transfer to europium ions occurs from the levels of both p -methylbenzoic acid and neutral ligands.

scholarly journals Разнолигандные комплексные соединения европия (III) с o-метоксибензойной кислотой и фосфорсодержащими нейтральными лигандами

2020 ◽  
Vol 128 (5) ◽  
pp. 612
Author(s):  
И.В. Калиновская
Keyword(s):  
Triphenylphosphine Oxide ◽  
Complex Compounds ◽  
Endothermic Effect ◽  
Ligand Molecule ◽  
Electronic Excitation Energy ◽  
Hexamethylphosphoric Triamide ◽  
Europium Ion ◽  
Phosphorus Containing ◽  
Neutral Ligands ◽  
Methoxybenzoic Acid

The luminescent coordination multi-ligand compounds of europium (III) with o-methoxybenzoic acid and island-containing phosphorus-containing neutral ligands of the composition Eu (MOBA) 3 • 3Н2О and Eu (MOBA) 3 • L, where MOBA is o-methoxybenzoic acid, D is hmpa (D hexamethylphosphoric triamide), tppo (triphenylphosphine oxide), Et6pa (hexaethylphosphotriamide). The composition, structure, and thermal properties of complex multi-ligand compounds of europium (III) were studied. It was shown that during thermolysis, detachment of a neutral ligand molecule occurs in one stage with an endothermic effect, complex compounds are stable up to 280 С.Based on the data of IR spectroscopy, it was found that in the europium (III) o-methoxybenzoates, the o-methoxybenzoic acid is coordinated to the europium (III) o-methoxybenzoic ion in a bidentate manner. The low luminescence intensity of multi-ligand europium (III) compounds is explained by the inefficient transfer of electronic excitation energy from o-methoxybenzoic acid and phosphorus-containing neutral ligands to the europium ion.

Spectra of nickel(II) perchlorate in organic solvents. Mixed-ligand complexes

1974 ◽  
Vol 27 (12) ◽  
pp. 2683 ◽  
Author(s):  
R Abu-Eittah ◽  
S El-Makabaty
Keyword(s):  
Absorption Spectra ◽  
Organic Solvents ◽  
Electronic Absorption ◽  
Transition Probabilities ◽  
Electronic Absorption Spectra ◽  
Energy Levels ◽  
Mixed Ligand Complex ◽  
Mixed Ligand ◽  
Ligand Complex ◽  
Complex Ion

The electronic absorption spectra of nickel(II) perchlorate were investigated in some organic solvents. Transition probabilities, energy levels splitting and related parameters were computed. The absorbing species was identified as a mixed ligand complex ion for nickel(II).

Electroluminescent properties of the mixed-ligand complex of terbium salicylate with triphenylphosphine oxide

2004 ◽  
Vol 141 (3) ◽  
pp. 225-230 ◽  
Author(s):  
Svetlana Eliseeva ◽  
Oksana Kotova ◽  
Oleg Mirzov ◽  
Kirill Anikin ◽  
Leonid Lepnev ◽  
...  
Keyword(s):  
Mixed Ligand Complex ◽  
Triphenylphosphine Oxide ◽  
Mixed Ligand ◽  
Ligand Complex
Sign in / Sign up

Export Citation Format

Share Document