A Simple Way to Obtain a Decachloro Derivative of Cobalt Bis(dicarbollide)

Anufriev, Sergey A.; Stogniy, Marina Yu.; Sivaev, Igor B.

doi:10.3390/reactions4010008

Cited by 3 publications

(3 citation statements)

References 48 publications

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“…We performed a series of experiments using chlorinated cobalt dicarbolide (CCD) or pentafluorobenzoic acid (PFBA) as lipophilic additives. CCD is a popular synergetic additive for cesium extraction from HLW [16,17] which is used in spent nuclear fuel treatment. An alternative to 2-bromohexanoic can be a strong organosoluble acid such as PFBA.…”

Section: The Extraction Of Am(iii) and Eu(iii)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Also, in these experiments, we used lipophilic anionic additives in the organic phase. The introduction of these additives can tune the extraction efficiency and selectivity [15][16][17][18]. The wide range of applications of rare-earth elements in industry and technology [19][20][21][22] has led to the need to find materials that, when interacting with ions of rare-earth elements, form stable compounds with outstanding luminescent properties [18].…”

Section: Introductionmentioning

confidence: 99%

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Formation of Complexes of f-Elements with Electron-Withdrawing N-Heterocyclic Diamides: Extraction and Solution Photophysics

Borisova,

Kharcheva,

Shmelkov

et al. 2023

Metals

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To examine the scope of the abnormal aryl strengthening effect (an increase in the extraction of metal ions when an aromatic substituent is introduced into the amide group) on f-metal extraction, a series of tetradentate diamide-type extragents bearing electron-withdrawing pyridine rings in amide moieties of the molecules were tested. The solvent extraction of Am(III)/Eu(III) pairs was investigated under various conditions, the solution chemistry of the lanthanide-extragents systems was studied, and the bonding constants were calculated for complexes of Eu(III) and Tb(III) ions with diamides. The photophysical properties of chemically synthesized ligand/metal (LM) complexes with various LM compositions were additionally studied in depth. The replacement of a phenyl ring by a pyridine one led to a critical reduction in metal affinity, showing the major contribution of electronic nature to the abnormal aryl strengthening effect. However, the pyridine group in the amide side chain provided additional coordination positions for metal ion binding; corresponding complexes with LM2 composition were detected in the system and their stability was calculated. Due to the low stability of the corresponding LM2 complexes, chemical synthesis of the complexes led to the formation of only one metal-containing species with LM composition. The luminescence spectra of europium and terbium complexes of the LM composition were studied. Differences were discovered in the luminescence excitation spectra of europium and terbium complexes with the same ligand. The luminescence quantum yields and luminescence lifetimes of solutions of europium and terbium complexes were determined.

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Section: The Extraction Of Am(iii) and Eu(iii)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Formation of Complexes of f-Elements with Electron-Withdrawing N-Heterocyclic Diamides: Extraction and Solution Photophysics

Borisova,

Kharcheva,

Shmelkov

et al. 2023

Metals

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Unraveling the correlation between biological effects and halogen substituents in cobalt bis(dicarbollide)

Zakret-Drozdowska,

Szermer-Olearnik,

Goldeman

et al. 2025

Inorg. Chem. Front.

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Bis(Dicarbollide) Complexes of Transition Metals: How Substituents in Dicarbollide Ligands Affect the Geometry and Properties of the Complexes

Sivaev

2024

Molecules

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The interaction between different types of substituents in dicarbollide ligands and their influence on the stabilization of various rotational conformers (rotamers) of transition metal bis(dicarbollide) complexes [3,3′-M(1,2-C2B9H11)2]− are considered. It has been shown that the formation of intramolecular CH···X hydrogen bonds between dicarbollide ligands is determined by the size of the proton acceptor atom X rather than its electronegativity. Due to the stabilization of rotamers with different dipole moments, intramolecular hydrogen bonds between ligands in transition metal bis(dicarbollide) complexes can have a significant impact on the biological properties of their derivatives. In the presence of external complexing metals, weak intramolecular CH···X hydrogen bonds can be broken to form stronger X—>M donor-acceptor bonds. This process is accompanied by the mutual rotation of dicarbollide ligands and can be used in sensors and molecular switches based on transition metal bis(dicarbollide) complexes.

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A Simple Way to Obtain a Decachloro Derivative of Cobalt Bis(dicarbollide)

Cited by 3 publications

References 48 publications

Formation of Complexes of f-Elements with Electron-Withdrawing N-Heterocyclic Diamides: Extraction and Solution Photophysics

Formation of Complexes of f-Elements with Electron-Withdrawing N-Heterocyclic Diamides: Extraction and Solution Photophysics

Unraveling the correlation between biological effects and halogen substituents in cobalt bis(dicarbollide)

Bis(Dicarbollide) Complexes of Transition Metals: How Substituents in Dicarbollide Ligands Affect the Geometry and Properties of the Complexes

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