Results 51 to 60 of about 64,953 (273)

Crystal structure and thermal behaviour of pyridinium styphnate

Acta Crystallographica Section E: Crystallographic Communications, 2015
In the crystal structure of the title molecular salt, C5H6N+·C6H2N3O8− (systematic name: pyridinium 3-hydroxy-2,4,6-trinitrophenolate), the pyridinium cation and the 3-hydroxy-2,4,6-trinitrophenolate anion are linked through bifurcated N—H...(O,O ...
Selvarasu Muthulakshmi, Doraisamyraja Kalaivani   +1 more
doaj   +1 more source

2-(Benzenesulfonamido)pyridinium nitrate [PDF]

Acta Crystallographica Section E Structure Reports Online, 2009
In the title compound, C11H11N2O2S+·NO3−, the dihedral angle between the benzene and pyridinium rings is 87.59 (8)°. An intramolecular C—H...O interaction occurs in the cation. In the crystal structure, ion pairs occur, being linked by two strong N—H...O interactions, formingR22(8) loops. The packing is further stabilized by weak C—H...O interactions.
Jiang-Sheng Li, Xun Li
openaire   +3 more sources

Supramolecular Allostery Achieves Tunable Luminescence Aromatic Bridged Phenothiazine Noncovalent Frameworks

Advanced Science, EarlyView.
Tunable luminescent supramolecular organic framework enabled by multiple allosteric effects, composed of a tetracation vinylphenylpyridinium‐modified aromatic‐bridged phenothiazine guest and cucurbit[8]uril, not only exhibits unique guest oxidation‐driven NIR luminescence blue‐shift and effectively enhances the quantum yield by 46‐fold to 22.2% but ...
Xinping Lu, Jianchong Chen, Jie Yu
wiley   +1 more source

2-(Benzenesulfonamido)pyridinium perchlorate [PDF]

Acta Crystallographica Section E Structure Reports Online, 2009
In the title compound, C11H11N2O2S+·ClO4−, the dihedral angle between the benzene and pyridinium rings is 87.33 (10)°. An intramolecular N—H...O interaction, with an S=O-bonded O atom as receptor, occurs in the cation. In the crystal structure, ion pairs occur, being linked by strong N—H...O hydrogen bonds. The perchlorate anion plays a further role in
Xun Li, Dan Xie, Zhi-Hong Xiao, Chang-Zhu Li   +3 more
openaire   +3 more sources

Sub‐Second Ratiometric Fluorescence Imaging of Histamine Dynamics in Living Cells via a Supramolecular Probe

Advanced Science, EarlyView.
A tailored tripartite supramolecular ratiometric probe, engineered by modulating the fluorogenic guest's cationic locus, enables ultrafast histamine monitoring in living cells. Utilizing a competitive displacement mechanism, this system achieves a sub‐second response time with high selectivity.
Chenming Chan, Yujie Han, Yu‐Fei Song, Chunlei Jiang, Qi‐Wei Zhang   +4 more
wiley   +1 more source

On the Chemical Stabilities of Ionic Liquids

Molecules, 2009
Ionic liquids are novel solvents of interest as greener alternatives to conventional organic solvents aimed at facilitating sustainable chemistry. As a consequence of their unusual physical properties, reusability, and eco-friendly nature, ionic liquids ...
Yen-Ho Chu, Ming-Chung Tseng, Venkatesan Srinivasadesikan, Subbiah Sowmiah   +3 more
doaj   +1 more source

Phosphonium Ionic Liquids for Electrochemical Energy Storage: Structure–Property–Interphase Relationships and Design Rule

Advanced Science, EarlyView.
Phosphonium ionic liquids offer a versatile platform for safer and more durable energy storage. This Review connects cation–anion structure with solvation, ion transport, electrochemical stability, and interphase formation across diverse battery chemistries.
Amir Haghipour, Ishanka Thennakoon, Aishwaryaba Jadeja, Daniel Rauber, Markus Gallei, Rolf Hempelmann, Sangwon Kim, Jungtae Kim   +7 more
wiley   +1 more source

Anion Influence on the Packing of 1,3-Bis(4-Ethynyl-3-Iodopyridinium)-Benzene Halogen Bond Receptors

Crystals, 2019
Rigid and directional arylethynyl scaffolds have been widely successful across diverse areas of chemistry. Utilizing this platform, we present three new structures of a dicationic 1,3-bis(4-ethynyl-3-iodopyridinium)-benzene halogen bonding receptor with ...
Daniel A. Decato, Asia Marie S. Riel, Orion B. Berryman   +2 more
doaj   +1 more source

Pyridinium ylids in synthesis. III. Synthesis of indolizines

, 1967
Treatment of pyridinium, quinolinium, and isoquinolinium ylids with acetylenes yields indolizine derivatives. Pyridinium phenacylid with iodine in dimethylacetamide gives 1,2,3-tribenzoylindolizine.
CA Henrick, E Ritchie, WC Taylor
core   +1 more source

Nahinfrarot‐Photoschalten durch direkte Anregung—die nächste Herausforderung

Angewandte Chemie, EarlyView.
Molekulare Photoschalter können endlich direkt mit Licht aus dem Nahinfrarotbereich angeregt werden. Dieser Kurzaufsatz fasst den derzeitigen Entwicklungsstand, die Designprinzipien für niedrigenergetische Lichtresponsivität und die dadurch möglichen außergewöhnlichen Anwendungen zusammen.
Diptiprava Sahoo, Elias Ciekalski, Henry Dube   +2 more
wiley   +1 more source