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| http://dx.doi.org/10.1002/open.201200046 | DOI Listing |
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Pentafluoroorthotellurate Uncovered: Theoretical Perspectives on an Extremely Electronegative Group.
Inorg Chem
January 2025
Departamento de Química Física and Instituto de Biocomputación y Física de Sistemas Complejos (BIFI), Universidad de Zaragoza, Zaragoza 50009, Spain.
Article Synopsis
- The pentafluoroorthotellurate group (-OTeF, teflate) is a potent electron-withdrawing substitute for fluoride, known for its stability and size, which helps avoid bridging ligand behavior.
- This study employs advanced Quantum Chemical Topology methods to analyze the electronic structure and bonding of the teflate group, comparing its electronegativity with halogens and investigating the interactions in various XOTeF systems.
- Findings reveal that while teflate exhibits strong electron-withdrawing abilities akin to fluorine, its bonding is predominantly ionic and shares similar electronegativity traits with other O-donor groups.
Nonheme Mononuclear and Dinuclear Iron(II) and Iron(III) Fluoride Complexes and Their Fluorine Radical Transfer Reactivity.
Inorg Chem
December 2024
Department of Chemistry, The Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States.
The nonheme iron(II) complexes containing a fluoride anion, Fe(BNPAO)(F) () and [Fe(BNPAOH)(F)(THF)](BF) (), were synthesized and structurally characterized. Addition of dioxygen to either or led to the formation of a fluoride-bridged, dinuclear iron(III) complex [Fe(BNPAO)(F)(μ-F)] (), which was characterized by single-crystal X-ray diffraction, H NMR, and elemental analysis. An iron(II)(iodide) complex, Fe(BNPAO)(I) (), was prepared and reacted with O to give the mononuclear complex -Fe(BNPAO)(OH)(I) ().
View Article and Find Full Text PDFStructural and optical studies of fluoride ion binding using N-heteroaromatic ligands.
Dalton Trans
December 2024
Department of Industrial and Engineering Chemistry, Institute of Chemical Technology - Indian Oil Odisha Campus, Bhubaneswar, Odisha 751013, India.
8-Hydroxyquinoline and imidazole, two important N-heteroaromatic systems, have a strong affinity towards various anions their acidic OH or NH protons. Three receptor ligands, 5-(1-benzo[]imidazol-2-yl)quinolin-8-ol (1), 5-(benzo[]thiazol-2-yl)quinolin-8-ol (2), and 4-(1-benzo[]imidazol-2-yl)benzene-1,3-diol (3), were synthesized, and their fluoride (F) ion binding properties were investigated. These ligands could selectively bind F ions, and their respective F complexes, namely, 1-TBAF, 2-TBAF, and 3-TBAF (TBAF = tetrabutylammonium fluoride), were characterized using single crystal X-ray analysis, NMR, UV-vis, Hirshfeld surface (HS) analysis and computational studies.
View Article and Find Full Text PDFEfficient uranium(VI) recovery from fluorinated wastewater via deferiprone ligand complexation.
Water Res
November 2024
College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, PR China. Electronic address:
Extracting uranium (U(VI)) from fluoride-rich radioactive wastewater is of great significance for the development of nuclear energy and environmental remediation. The presence of thermodynamically stable [UOF] (n = 0, 1, 2, 3, 4) aqueous complexes in fluoride-rich U(VI)-containing wastewater significantly hinders the efficiency of uranyl extraction and recovery using conventional methods. In this study, we report a direct precipitation method using deferiprone ligands for efficient uranyl extraction from fluoride-rich wastewater that offsets the preparation of solid materials.
View Article and Find Full Text PDFOleylammonium fluoride passivated blue-emitting 2D CsPbBr nanoplates with near-unity photoluminescence quantum yield: safeguarding against threats from external perturbations.
Chem Sci
January 2025
Department of Chemistry, Indian Institute of Technology Kanpur Kanpur - 208 016 UP India +91 512 259 6806 +91 512 259 6312.
Quantum-confined, two-dimensional (2D) CsPbBr (CPB) nanoplates (NPLs) have emerged as exceptional candidates for next-generation blue LEDs and display technology applications. However, their large surface-to-volume ratio and detrimental bromide vacancies adversely affect their photoluminescence quantum yield (PLQY). Additionally, external perturbations such as heat, light exposure, moisture, oxygen, and solvent polarity accelerate their transformation into three-dimensional (3D), green-emitting CPB nanocrystals (NCs), thereby resulting in the loss of their quantum confinement.
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