Results 91 to 100 of about 61,221 (238)

Cryoscopy in molten pyridinium chloride

open access: yes, 1967
The molal cryoscopic constant in molten pyridinium chloride (m.p. 146.0 ) has been found to be 17.4 (subject to confirmation by calorimetry) and the cryoscopic heat of fusion, 2310 40 cal mole-1.
H Bloom, VC Reinsborough
core   +1 more source

Crystal structure of pyridinium tetraisothiocyanatodipyridinechromium(III) pyridine monosolvate

open access: yesActa 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
doaj   +1 more source

Pyridinium cationic lipids as gene transfer agents

open access: yes, 2004
Pyridinium cationic lipids useful as non-viral gene delivery agents are disclosed. The agents are prepared by reaction of pyrylium salts with primary amines.
Seitz, William A.   +7 more
core   +1 more source

Click‐to‐Release Reactivity of Quaternary Anilinium Tetrazines Enables Cascade Assembly of Multifunctional Biomolecular Scaffolds

open access: yesAngewandte Chemie International Edition, EarlyView.
Click chemistry has evolved from making covalent connections to also breaking bonds. Here, a cascade assembly is reported that combines these maneuvers to build multifunctional biomolecular scaffolds in a modular one‐pot reaction. The unifying azide release‐tetrazine hub clicks with a trans‐cyclooctene tag, rapidly liberates N,N‐dimethylaniline to ...
Markus Staudt   +9 more
wiley   +1 more source

Hexaaquazinc(II) dinitrate bis[5-(pyridinium-3-yl)tetrazol-1-ide]

open access: yesActa 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
doaj   +1 more source

Thermochemistry of Pyridinium Based Ionic Liquids with Tetrafluoroborate Anion

open access: yes, 2020
© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, WeinheimEnthalpies of vaporization of five pyridinium based ionic liquids (ILs): 1-R-pyridinium (with R = ethyl, butyl-, and hexyl), 1-butyl-3-methyl-pyridinium, and 1-butyl-4-methyl-pyridinium with ...
Zaitsau D.   +4 more
core  

Synthesis and Characterization of Novel Pyridinium Salts of (E)-2-(Pyridin-4-ylmethylene)hydrazine-1-carboximidamide

open access: yesMolbank
We 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
doaj   +1 more source

Hydroxyl Functionalized Pyridinium Ionic Liquids: Experimental and Theoretical Study on Physicochemical and Electrochemical Properties

open access: yesFrontiers 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
doaj   +1 more source

Multicomponent reactions for DNA‐encoded library construction: Scaffold diversity and reaction engineering strategies

open access: yesBulletin of the Korean Chemical Society, EarlyView.
Abstract DNA‐encoded libraries (DELs) enable large‐scale screening for hit identification, but accessing sp3‐rich, three‐dimensional chemotypes beyond flat, aromatic scaffolds remains challenging. Multicomponent reactions (MCRs) assemble such complexity from simple building blocks in a single step, and reaction‐engineering strategies have extended on ...
Jimin Moon   +3 more
wiley   +1 more source

Porous Carbon Materials for Carbon Dioxide Capture

open access: yesCarbon 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

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