Results 71 to 80 of about 37,029 (225)
2-Aminopyridinium 2,4-dinitrophenolate
IUCrData, 2016 The asymmetric unit of the title organic salt, C5H7N2+·C6H3N2O5−, comprises two 2-aminopyridinium cations and two 2,4-dinitrophenolate anions. The cations are protonated at the pyridine N atoms, while the anions are deprotonated at hydroxyl O atoms.
S. Reena Devi +4 more
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Beilstein Journal of Organic ChemistryEfficient water-solubilization of nanocarbons is desirable for both their biological and material applications, but so far has mainly relied on covalent modifications or amphiphiles featuring ionic side-chains. Here, we report a facile 2–4-step synthesis
Lorenzo Catti +2 more
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Acta Crystallographica Section E: Crystallographic Communications, 2018 The title compound {systematic name: 3-carboxy-2-[2-(3-carboxypyridin-2-yl)disulfan-1-yl)]pyridin-1-ium chloride monohydrate}, C12H9N2O4S2+·Cl−·H2O, crystallizes in the triclinic space group P\overline{1}.
Alexander T. Chemey +2 more
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Crystal structure of pyridinium tetraisothiocyanatodipyridinechromium(III) pyridine monosolvate
Acta Crystallographica Section E: Crystallographic Communications, 2019 In the crystal structure of the title compound, (C5H6N)[Cr(NCS)4(C5H5N)2]·C5H5N, the CrIII ions are octahedrally coordinated by four N-bonding thiocyanate anions and two pyridine ligands into discrete negatively charged complexes, with the CrIII ion, as ...
Tristan Neumann +2 more
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Frontiers in Chemistry, 2019 Structurally modified hydroxyl functionalized pyridinium ionic liquids (ILs), liquid at room temperature, were synthesized and characterized. Alkylated N-(2-hydroxyethyl)-pyridinium ILs were prepared from alkylpyridines via corresponding bromide salts by
Kallidanthiyil Chellappan Lethesh +6 more
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Hexaaquazinc(II) dinitrate bis[5-(pyridinium-3-yl)tetrazol-1-ide]
Acta Crystallographica Section E: Crystallographic Communications, 2018 Hexaaquazinc(II) dinitrate 5-(pyridinium-3-yl)tetrazol-1-ide, [Zn(H2O)6](NO3)2·2C6H5N5, crystallizes in the space group P\overline{1}. The asymmetric unit contains one zwitterionic 5-(pyridinium-3-yl)tetrazol-1-ide molecule, one NO3− anion and one half ...
Ignacio Chi-Duran +4 more
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BODIPY‐based J‐aggregates: From supramolecular chemistry to NIR bioimaging and phototherapies
Bulletin of the Korean Chemical Society, EarlyView.BODIPY dyes form ordered J‐aggregates through controlled supramolecular self‐assembly, producing narrow, red‐shifted absorption bands with small Stokes shifts. This review highlights design strategies governing J‐aggregation, structure–property relationships, and applications in sensing, bioimaging, and phototherapy, guiding functional BODIPY‐based ...
Pooja Sharma +2 more
wiley +1 more source
Regioselective Oxidation of 3-Substituted Pyridinium Salts
Molecules, 2000 (1'R)-(+)-3-Hydroxymethyl-1-(1'-phenyl-ethyl)-pyridinium chloride (1), 1-benzyl-3-[1', 3']-dioxolan-2'-yl-pyridinium chloride (2) and (2'S, 4'S, 5'R)-(-)-1-benzyl-3-(3',4'-dimethyl-5'-phenyl-oxazolidin-2'-yl)-pyridinium bromide (3), were transformed by ...
W. F. Reynolds +6 more
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Porous Carbon Materials for Carbon Dioxide Capture
Carbon Energy, EarlyView.This work aims to address the current status and challenges associated with the regulation of pore structures, as well as the influence of pore structures on CO2 capture. Systematic quantitative analysis of structure–property relationships, combined with machine learning approaches, can effectively evaluate the contributions of structural ...
Zhifu Liu +6 more
wiley +1 more source
MolbankWe report the synthesis and characterization of the novel pyridinium salts from (E)-2-(pyridin-4-ylmethylene)hydrazine-1-carboximidamide. The pyridinium salts were obtained via the reaction of guanylhydrazone derived from pyridine-4-carbaldehyde with ...
Fatemeh Ataie Alani +3 more
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