Results 31 to 40 of about 16,085 (237)

4-{(1E,3E)-4-[4-(Dimethylamino)phenyl]buta-1,3-dien-1-yl}-1-methylpyridin-1-ium iodide

IUCrData, 2016
The title molecular salt, C18H21N2+·I−, consists of a pyridinium cation and an I− anion. The cation exists in an E,E conformation with respect to the two C=C double bonds, and is roughly planar with the pyridinium ring being inclined to the benzene ring ...
S. John Sundaram, P. Sagayaraj, A. Antony Raj, E. R. A. Dravida Thendral, G. Usha   +4 more
doaj   +1 more source

2-[5-(Pyridin-2-yl)-1,3,4-thiadiazol-2-yl]pyridin-1-ium perchlorate

IUCrData, 2017
The cation of the title molecular salt, C12H9N4S+·ClO4−, is approximately planar, with the pyridine and pyridinium rings being inclined to the central thiadiazole ring by 6.51 (9) and 9.13 (9)°, respectively.
Abdelhakim Laachir, Fouad Bentiss, Salaheddine Guesmi, Mohamed Saadi, Lahcen El Ammari   +4 more
doaj   +1 more source

4-(4-Nitrobenzyl)pyridinium 5-nitrosalicylate [PDF]

, 2010
In the title salt, C12H11N2O2+·C7H4NO5−, the cations and anions interact through asymmetric cyclic pyridinium–carboxylate N—H...O,O′ hydrogen-bonding associations [graph set R12(4)], giving discrete ...
Urs D. Wermuth, Smith, Graham, Wermuth, Urs D., Graham Smith   +3 more
core   +2 more sources

2-[(Pyridin-2-yl)amino]pyridinium 2,4,6-trinitrophenolate

Acta Crystallographica Section E, 2014
In the cation of the title salt, C10H10N3+·C6H2N3O7−, the pyridine and pyridinium rings are linked by an intramolecular N—H...N hydrogen bond and are approximately coplanar, with a dihedral angle between their planes of 4.24 (6)°.
Kateryna A. Ohui, Irina A. Golenya, Nadezhda A. Bokach   +2 more
doaj   +1 more source

Glutaconaldehyde as an Alternative Reagent to the Zincke Salt for the Transformation of Primary Amines into Pyridinium Salts [PDF]

, 2019
In the presence of amines, the degradation of glutaconaldehyde in acidic medium can be prevented. By exploitation of this behavior, primary amines are transformed into their corresponding pyridinium salts, including those substrates that remain ...
Thierry Martens, Thierry Martens (1417090), Ghada Asskar, Ghada Asskar (8124893), Michael Rivard, Michael Rivard (1417102)   +5 more
core   +1 more source

4,4′-(o-Phenylenedioxydimethylene)dipyridinium dinitrate

Acta Crystallographica Section E, 2009
The cation of the salt, C18H18N2O22+·2NO3−, lies about a twofold rotation axis. The pyridinium ring is almost coplanar with the phenylene ring [dihedral angle between rings = 5.69 (9)°].
Ping Zou, Shuang Zhang, Ying Liu, Jun Qiao, Jin-Sheng Gao   +4 more
doaj   +1 more source

Pyridinium-catalyzed decarboxylative borylation of benzoyl peroxides

Green Synthesis and Catalysis, 2021
A pyridinium salt catalyzed radical borylation of benzoyl peroxides is reported herein. A range of benzoyl peroxides having different electronic properties were well compatible in this borylation reaction, delivering various arylboronates in good yields ...
Shuxian Zhu, Jianxiang Yan, Yao Zhou, Kai Yang, Qiuling Song   +4 more
doaj   +1 more source

Crystal structure of (E)-3-{[2-(2,4-dichlorobenzylidene)hydrazin-1-yl]carbonyl}pyridinium chloride trihydrate

Acta Crystallographica Section E: Crystallographic Communications, 2015
In the title hydrated salt, C13H10Cl2N3O+·Cl−·3H2O, the organic cation exhibits a dihedral angle of 8.26 (14)° between the mean planes of the pyridinium and benzene rings, and dihedral angles of 8.70 (15) and 15.93 (5)° between the mean planes of the ...
J. Josephine Novina, G. Vasuki, M. Suresh, M. Syed Ali Padusha   +3 more
doaj   +1 more source

Supramolecular Polymerization and Morphological Transformation of Dynamic Helical Poly(Phenylacetylene)s via Chain‐End Host–Guest Interactions

Angewandte Chemie, EarlyView.
A helical polymer whose chain ends are connected through pillar[5]arene‐based host–guest interactions translates molecular helicity into supramolecular morphology. Solvent‐triggered helicity inversion accompanied by changes in chain rigidity switches the supramolecular architecture between cyclic and rigid‐rod nanostructures.
Tatsuya Nishimura, Haru Nozue, Feng Li, Tomoki Ogoshi, Katsuhiro Maeda   +4 more
wiley   +2 more sources

Crystal structure of bis[1-(4-bromobenzyl)pyridinium] bis(1,2-dicyanoethene-1,2-dithiolato-κ2S,S′)nickelate(II)

Acta Crystallographica Section E, 2014
The asymmetric unit of the title salt, (C12H11BrN)2[Ni(C4N2S2)2], consists of one 1-(4-bromobenzyl)pyridinium cation and one half of a complex [Ni(mnt)2]2− (mnt2− is the maleonitriledithiolate dianion).
Dong Zeng, Shui-Bin Yang, Zheng-Fang Tian   +2 more
doaj   +1 more source