Structure and Fluorescence Properties of Uranyl Ion Complexes with 3-(2-Hydroxyphenyl)-5-(2-Pyridyl)-1,2,4-Triazole Derivatives

Vashchenko, O. V.; Khomenko, Dmytro M.; Doroshchuk, Roman O.; Severynovska, Olga V.; Starova, Viktoriia S.; Trachevsky, Volodymyr V.; Lampeka, R. D.

doi:10.1007/s11237-016-9448-8

Cited by 6 publications

(3 citation statements)

References 15 publications

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“…As our contribution to the field, we have developed convenient synthetic methods to substituted 1,2,4-triazole ligands as potential chelators for uranyl ions (Vashchenko et al, 2020). The synthesized organic substances have also proved to be useful as analytical reagents for fluorescence determination of UO 2 2+ (Vashchenko et al, 2016a). 1,2,4-Triazoles bearing free carboxylate ends were considered promising owing to their simultaneous activities as both chelating and bridging ligands that can adopt various coordination modes (Vashchenko et al, 2017).…”

Section: Chemical Contextmentioning

confidence: 99%

Crystal structure of catena-poly[[methanoldioxidouranium(VI)]-μ-2-[5-(2-oxidophenyl)-1H-1,2,4-triazol-3-yl]acetato-κ² O:O′]

Vashchenko,

Khomenko,

Doroshchuk

et al. 2024

Acta Crystallogr E Cryst Commun

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In the title complex, [U(C10H7N3O3)O2(CH3OH)] n , the UVI cation has a typical pentagonal–bipyramidal environment with the equatorial plane defined by one N and two O atoms of one doubly deprotonated 2-[5-(2-hydroxyphenyl)-1H-1,2,4-triazol-3-yl]acetic acid ligand, a carboxylate O atom of the symmetry-related ligand and the O atom of the methanol molecule [U—N/Oeq 2.256 (4)–2.504 (5) Å]. The axial positions are occupied by two oxide O atoms. The equatorial atoms are almost coplanar, with the largest deviation from the mean plane being 0.121 Å for one of the O atoms. The benzene and triazole rings of the tetradentate chelating–bridging ligand are twisted by approximately 21.6 (2)° with respect to each other. The carboxylate group of the ligand bridges two uranyl cations, forming a neutral zigzag chain reinforced by a strong O—H...O hydrogen bond. In the crystal, adjacent chains are linked into two-dimensional sheets parallel to the ac plane by C/N—H...N/O hydrogen bonding and π–π interactions. Further weak C—H...O contacts consolidate the three-dimensional supramolecular architecture. In the solid state, the compound shows a broad medium intensity LMCT transition centred around 463 nm, which is responsible for its red colour.

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Section: Chemical Contextmentioning

confidence: 99%

Crystal structure of catena-poly[[methanoldioxidouranium(VI)]-μ-2-[5-(2-oxidophenyl)-1H-1,2,4-triazol-3-yl]acetato-κ² O:O′]

Vashchenko,

Khomenko,

Doroshchuk

et al. 2024

Acta Crystallogr E Cryst Commun

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“…12 Apart from simple inorganic salts of uranyl such as nitrates, 12 phosphates, carbonates, and hydroxides, 13 uranyl compounds with organic ligands selected to enhance uranyl luminescence intensity were also studied. 14,15 Other reported luminescence of trivalent uranium compounds is described as arising from 6d 1 5f 2 → 5f 3 dipole-allowed transitions. 16 Reports of thorium luminescent compounds are more scarce.…”

Section: ■ Introductionmentioning

confidence: 99%

“…For instance, molecular systems based on the linear uranyl cation U(VI)O 2 2+ are notable for the characteristic charge transfer luminescence . Apart from simple inorganic salts of uranyl such as nitrates, phosphates, carbonates, and hydroxides, uranyl compounds with organic ligands selected to enhance uranyl luminescence intensity were also studied. , Other reported luminescence of trivalent uranium compounds is described as arising from 6d 1 5f 2 → 5f 3 dipole-allowed transitions …”

Section: Introductionmentioning

confidence: 99%

Electronic Structure Studies and Photophysics of Luminescent Th(IV) Anilido and Imido Complexes

et al. 2023

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A series of thorium anilide compounds [ThNHAr R (TriNOx)] (R = para-OCH 3 (1-Ar OMe ), para-H (1-Ar H ), para-Cl (1-Ar Cl ), para-CF 3 (1-Ar 4-CF3 ), TriNOx 3− = tris(2-tert-butylhydroxylaminato)benzylamine), and their corresponding imido compounds [Li(DME)][Th�NAr R (TriNOx)] (2-Ar R ) as well as the alkyl congeners [ThNHAd(TriNOx)] (1-Ad) and [Li(DME)][Th�NAd(TriNOx)] (2-Ad), have been prepared. The para-substituents on the arylimido moiety were introduced for systematic variation of their electron-donating and withdrawing abilities, changes that were evident in measurements of the 13 C{ 1 H} NMR chemical shifts of the ipso-C atom of the Ar R moiety. Room temperature, solution-state luminescence of the four new thorium imido compounds, along with the previously reported [Li(THF) 2 ][Th�NAr 3,5-CF3 (TriNOx)] (2-Ar 3,5-CF3 ) and [Li(THF)(Et 2 O)]-[Ce�NAr 3,5-CF3 (TriNOx)] (3-Ar 3,5-CF3) have been described. Among these complexes, 2-Ar 3,5-CF3 demonstrated the most intense luminescence feature with excitation at 398 nm and emission at 453 nm. The luminescence measurements, together with a timedependent density functional theory (TD-DFT) study, helped uncover an intra-ligand n → π* transition that was assigned as the origin of the bright blue luminescence; 3-Ar 3,5-CF3 has an 1.2 eV redshift in excitation energy compared with its proligand. The weak luminescence of other derivatives (2-Ar R and 3-Ar 3,5-CF3 ) was attributed to non-radiative decay from low-lying excited states originating from inter-ligand transitions (2-Ar R ) or ligand-to-metal charge transfer bands (3-Ar 3,5-CF3 ). Overall, the results expand the range of the thorium imido organometallic compounds and demonstrate that thorium(IV) complexes can support strong ligand luminescence. The results also demonstrate the utility of applying a Th(IV) center for tuning the n → π* luminescence energy and intensity of an associated imido moiety.

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Aminotriazole isomers modified cellulose microspheres for selective adsorption of U(VI): Performance and mechanism investigation

Wen

Dong

et al. 2021

Carbohydrate Polymers

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Structure and Fluorescence Properties of Uranyl Ion Complexes with 3-(2-Hydroxyphenyl)-5-(2-Pyridyl)-1,2,4-Triazole Derivatives

Cited by 6 publications

References 15 publications

Crystal structure of catena-poly[[methanoldioxidouranium(VI)]-μ-2-[5-(2-oxidophenyl)-1H-1,2,4-triazol-3-yl]acetato-κ² O:O′]

Crystal structure of catena-poly[[methanoldioxidouranium(VI)]-μ-2-[5-(2-oxidophenyl)-1H-1,2,4-triazol-3-yl]acetato-κ² O:O′]

Electronic Structure Studies and Photophysics of Luminescent Th(IV) Anilido and Imido Complexes

Aminotriazole isomers modified cellulose microspheres for selective adsorption of U(VI): Performance and mechanism investigation

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Structure and Fluorescence Properties of Uranyl Ion Complexes with 3-(2-Hydroxyphenyl)-5-(2-Pyridyl)-1,2,4-Triazole Derivatives

Cited by 6 publications

References 15 publications

Crystal structure of catena-poly[[methanoldioxidouranium(VI)]-μ-2-[5-(2-oxidophenyl)-1H-1,2,4-triazol-3-yl]acetato-κ2 O:O′]

Crystal structure of catena-poly[[methanoldioxidouranium(VI)]-μ-2-[5-(2-oxidophenyl)-1H-1,2,4-triazol-3-yl]acetato-κ2 O:O′]

Electronic Structure Studies and Photophysics of Luminescent Th(IV) Anilido and Imido Complexes

Aminotriazole isomers modified cellulose microspheres for selective adsorption of U(VI): Performance and mechanism investigation

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Product

Resources

About

Crystal structure of catena-poly[[methanoldioxidouranium(VI)]-μ-2-[5-(2-oxidophenyl)-1H-1,2,4-triazol-3-yl]acetato-κ² O:O′]

Crystal structure of catena-poly[[methanoldioxidouranium(VI)]-μ-2-[5-(2-oxidophenyl)-1H-1,2,4-triazol-3-yl]acetato-κ² O:O′]