Results 31 to 40 of about 60,247 (222)

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

Recent Progress in Heterocycle Synthesis: Cyclization Reaction with Pyridinium and Quinolinium 1,4-Zwitterions

Molecules, 2023
Heteroarene 1, n-zwitterions are powerful and versatile building blocks in the construction of heterocycles and have received increasing attention in recent years.
Zhen-Hua Wang, Yong You, Jian-Qiang Zhao, Yan-Ping Zhang, Jun-Qing Yin, Wei-Cheng Yuan   +5 more
doaj   +1 more source

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

Acta Crystallographica Section E, 2014
A new ion-pair complex, (C16H14N)2[Ni(C4N2S2)2] or (1-NaMePy)2[Ni(imnt)2], where 1-NaMePy is 1-(4-naphthylmethylene)pyridinium and imnt is 2,2-dicyanoethene-1,1-dithiolate, was obtained by the direct reaction of NiCl2, K2imnt and (1-NaMePy)+Br− in H2O ...
Miao Zhang, Xu-Jie Xiong
doaj   +1 more source

Preparation of Iron-nickel Alloy Nanostructures via Two Cationic Pyridinium Derivatives as Soft Templates [PDF]

, 2015
In this paper, crystalline iron-nickel alloy nanostructures were successfully prepared from two cationic pyridinium derivatives as soft templates in solution.
Guo, Wenfeng, Linfan Cui, Bo Wang, Zhou, Jingxin, Chen, Yan, Cui, Linfan, Wenfeng Guo, Wang, Bo, Jingxin Zhou, Zhang, Qingrui, Qingrui Zhang, Yan Chen, Guo, Haiying, Qiuming Peng, Peng, Qiuming, Tifeng Jiao, Jiao, Tifeng, Haiying Guo   +17 more
core   +1 more source

Synthesis, biological evaluation, and computational studies of N-benzyl pyridinium–curcumin derivatives as potent AChE inhibitors with antioxidant activity

Journal of Enzyme Inhibition and Medicinal Chemistry, 2023
A library of N-benzylpyridinium-based compounds, 7a-j and 8a-j, was designed and synthesised as potential acetylcholinesterase) AChE (inhibitors. An in vitro assay for the synthesised compounds showed that most compounds had significant AChE inhibitory ...
Nafisah M. Al-Rifai, Nemeh M. Al-Khalileh, Jalal A. Zahra, Musa I. El-Barghouthi, Fouad H. Darras   +4 more
doaj   +1 more source

Crystal structure of 4-amino-1-(4-methylbenzyl)pyridinium bromide

Acta Crystallographica Section E, 2014
The title molecular salt, C13H15N2+·Br−, crystallized with two independent ion pairs (A and B) in the asymmetric unit. In the cations, the planes of the pyridine and benzene rings are inclined to one another by 79.32 (8) and 82.30 (10)° in ion pairs A ...
N. Sharmila, T. V. Sundar, A. Yasodha, A. Puratchikody, B. Sridhar   +4 more
doaj   +1 more source

(E)-2,6-Dibromo-4-{2-[1-(1H,1H,2H,2H-perfluorooctyl)pyridinium-4-yl]ethenyl}phenolate methanol disolvate, a fluoroponytailed solvatochromic dye

Acta Crystallographica Section E: Crystallographic Communications, 2017
The title compound, C21H12Br2F13NO·2CH3OH, was obtained by condensation of 4-methyl-1-(1H,1H,2H,2H-perfluorooctyl)pyridinium iodide and 3,5-dibromo-4-hydroxybenzaldehyde, followed by deprotonation.
Lukas Fliri, Gabriel Partl, Thomas Gelbrich, Volker Kahlenberg, Gerhard Laus, Herwig Schottenberger   +5 more
doaj   +1 more source

Grafted ionomer complexes and their effect on protein adsorption on silica and polysulfone surfaces [PDF]

, 2010
peer reviewedWe have studied the formation and the stability of ionomer complexes from grafted copolymers (GICs) in solution and the influence of GIC coatings on the adsorption of the proteins beta-lactoglobulin (beta-lac), bovine serum albumin (BSA ...
Arie de Keizer, Stuart, M.A.C., Cohen Stuart, Martien A., Brzozowska, Agata M., Norde, Willem, Christophe Detrembleur, Detrembleur, Christophe, Agata M. Brzozowska, Willem Norde, de Keizer, Arie, Keizer, A., de, Norde, W., Brzozowska, A.M., Detrembleur, C., Martien A. Cohen Stuart, de Keizer, A., Stuart, Martien A. Cohen   +16 more
core   +2 more sources

Theoretical Analysis of the Heterocyclic [4+2] Cycloaddition Between Pyridinium Ion and Enol Ether

ChemistryOpen, 2021
Dearomative heterocyclic [4+2] cycloaddition between the N‐(2,4‐dinitrophenyl)pyridinium ion of nicotinamide and an enol ether was analyzed by Density Functional Theory (DFT) calculations.
Masataka Nakahara, Prof. Kengo Hanaya, Prof. Takeshi Sugai, Prof. Shuhei Higashibayashi   +3 more
doaj   +1 more source

2-Amino-4-methoxy-6-methylpyrimidin-1-ium trifluoroacetate

IUCrData, 2016
In the title molecular salt, C6H10N3O+·C2F3O2−, the pyrimidinium cation is essentially planar, with a maximum deviation of 0.042 (3) Å for all non-H atoms.
Muthaiah Jeevaraj, Bellarmin Edison, Savaridasson Jose Kavitha, Kanagasabapathy Thanikasalam, Sebastian Britto, Kasthuri Balasubramani   +5 more
doaj   +1 more source