Results 11 to 20 of about 23,656 (192)

Nifedipine–pyrazine (2/1)

open access: yesActa Crystallographica Section E, 2010
In the title compound, 2C17H18N2O6·C4H4N2 [systematic name: 3,5-dimethyl 2,6-dimethyl-4-(2-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate–pyrazine (2/1)], the complete pyrazine molecule is generated by crystallographic inversion ...
Nate Schultheiss   +2 more
doaj   +2 more sources

Pyrazine Carboxylic Acid Derivatives of Dichlorobis(Cyclopentadienyl)titanium(IV)

open access: yesOrbital: The Electronic Journal of Chemistry, 2012
Reactions of dichlorobis(cyclopentadienyl)titanium(IV) with pyrazine carboxylic acids viz. 2-pyrazine carboxylic acid (2-PzCH), 5-methyl-2-pyrazine carboxylic acid (MPzCH) and 2,3-pyrazine dicarboxylic acid (2,3-PzDCH2) were carried out in different ...
Satish Chandra Dixit, Rohit Kumar Singh
doaj   +2 more sources

From Quinoxaline, Pyrido[2,3-b]pyrazine and Pyrido[3,4-b]pyrazine to Pyrazino-Fused Carbazoles and Carbolines

open access: yesMolecules, 2018
2,3-Diphenylated quinoxaline, pyrido[2,3-b]pyrazine and 8-bromopyrido[3,4-b]pyrazine were halogenated in deprotometalation-trapping reactions using mixed 2,2,6,6-tetramethyl piperidino-based lithium-zinc combinations in tetrahydrofuran.
Frédéric Lassagne   +17 more
doaj   +2 more sources

Pyrazine Revisited [PDF]

open access: yesJournal of Chemical Physics, 1986
Pyrazine is shown by its Molecular Eigenstate Spectra and by its quantum beats to be a small molecule. The effect of Coriolis coupling and non-resonant light scattering are discussed. This paper further treats the so-called "fast component". Its existence with a decay time of about 100 psec has by now been firmly established. It finds its cause in the "
Drabe, Karel E.   +2 more
core   +6 more sources

Poly[(aquacalcium)-μ4-pyrazine-2,3-dicarboxylato]

open access: yesActa Crystallographica Section E, 2011
The polymeric title compound, [Ca(C6H2N2O4)(H2O)]n, was synthesized from pyrazine-2,3-dicarboxylic acid and calcium dichloride under hydrothermal conditions.
Qing-Feng Yang   +4 more
doaj   +2 more sources

μ-Pyrazine-2,5-dicarboxylato-bis[chlorido(η6-p-cymene)ruthenium(II)] tert-butanol disolvate [PDF]

open access: yes, 2008
μ-Pyrazine-2,5-dicarboxylato-bis[chlorido(η6-p-cymene)ruthenium(II)] tert-butanol ...
Noelia M. Sanchez Ballester (7163471)   +2 more
core   +6 more sources

N,N′-Bis(pyrazin-2-ylmethyl)pyrazine-2,3-dicarboxamide

open access: yesIUCrData, 2016
The title compound, C16H14N8O2, was prepared by a condensation reaction between the dimethyl ester of pyrazine-2,3-dicarboxylic acid and an excess of 2-(aminomethyl)pyrazine.
Zhaodong Wang   +2 more
doaj   +2 more sources

Out with Acetonitrile: Water-assisted Accelerated-Aging Synthesis of CuI-Pyrazine Hybrid Materials [PDF]

open access: yes, 2021
CuI and pyrazine form three hybrid materials, [(CuI)2(pyrazine)] (Yellow), [(CuI)2(pyrazine)2] (Orange), and [(CuI)(pyrazine)] (Red). In this work, Red was prepared using a green synthetic method, water-assisted accelerated-aging synthesis, for the first
Feier, Hou, Will, Lucas
core   +1 more source

Tight-Binding Approach to Pyrazine-Mediated Superexchange in Copper–Pyrazine Antiferromagnets [PDF]

open access: yesInorganic Chemistry, 2021
We investigate the cause of spatial superexchange anisotropy in a family of copper-based, quasi-two-dimensional materials with very similar geometries. The compounds in this family differ mainly in their inter-layer separation but they have very different magnetic interactions, even within the basal plane.
E. P. Kenny, A. C. Jacko, B. J. Powell
openaire   +5 more sources

Antimicrobial and Odour Qualities of Alkylpyrazines Occurring in Chocolate and Cocoa Products

open access: yesApplied Sciences, 2022
A total of 40 pyrazine compounds of cocoa and chocolate were discovered through a literature analysis. Data on the alkylpyrazines’ antibacterial properties were gathered.
Alina Cherniienko   +2 more
doaj   +1 more source

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