Results 31 to 40 of about 23,656 (192)
Pyrazine-Based Covalent Organic Frameworks for Effective Iodine and Carbon Dioxide Capture
, 2023 Covalent organic frameworks (COFs) possess good porosity, uniform channels, and tunable skeletons, as well as excellent stability, which are well-suited for gas adsorption.
Yamin He (17305630) +5 more
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Acta Crystallographica Section E: Crystallographic Communications, 2017 The reaction of silver(I) nitrate with the mono-substituted pyrazine carboxamide ligand, N-(pyridin-2-ylmethyl)pyrazine-2-carboxamide (L), led to the formation of the title compound with a metal–organic framework (MOF) structure, [Ag(C11H10N4O)(NO3)]n ...
Dilovan S. Cati, Helen Stoeckli-Evans
doaj +1 more source
Acta Crystallographica Section E: Crystallographic Communications, 2020 The two new tetrakis-substituted pyrazines, 1,1′,1′′,1′′′-(pyrazine-2,3,5,6-tetrayl) tetrakis(N,N-dimethylmethanamine), C16H32N6, (I) and N,N′,N′′,N′′′-[pyrazine-2,3,5,6-tetrayltetrakis(methylene)]tetrakis(N-methylaniline), C36H40N6, (II), both ...
Ana Tesouro Vallina +1 more
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IUCrData, 2021 Reaction of the ligand 2,2′,2′′,2′′′-{[pyrazine-2,3,5,6-tetrayltetrakis(methylene)]tetrakis(sulfanediyl)}tetraacetic acid (H4L1), with NiCl2 leads to the formation of a binuclear complex, (μ-2,2′,2′′,2′′′-{[pyrazine-2,3,5,6-tetrayltetrakis(methylene ...
Jessica Pacifico, Helen Stoeckli-Evans
doaj +1 more source
Life, 2021 An efficient and effective multiple headspace-solid phase microextraction-arrow-gas chromatography-mass spectrometry (MHS-SPME-arrow-GCMS) analytical protocol is established and used to quantify the flavor compounds in oils.
Ziyan Xu +5 more
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Shipin gongye ke-ji, 2023 Microcompounds, the key factors for the difference of flavor and quality in Baijiu, are one of the hot topics in the research field of Baijiu. Pyrazine compounds are a kind of microcompounds which contribute to the formation of the flavor in Baijiu, and ...
Yanmei ZHU +3 more
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Reactions and Syntheses of Pyrazines
YAKUGAKU ZASSHI, 1997 This review deals with syntheses and reactions of pyrazines, especially, of 2,5-disubstituted pyrazines. The description was made in due to order of 1) synthesis and properties of 2,5-disubstituted pyrazines, 2) synthesis of 2,5-disubstituted pyrazine N-oxides, 3) synthesis of pyrazinols, 4) synthesis and utilization of pyrazinethiols; preparation of ...
A, Ohta, Y, Aoyagi
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IUCrData, 2020 The reaction of ligand 3,4,8,10,11,13-hexahydro-1H,6H-bis([1,4]dithiocino)[6,7-b:6′,7′-e]pyrazine (L) with CuI led to the formation of a two-dimensional coordination polymer, incorporating a [Cu2I2] motif.
Tokouré Assoumatine +1 more
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Crystal structure of 2,3,5,6-tetrakis[(methylsulfanyl)methyl]pyrazine
Acta Crystallographica Section E, 2014 The title compound, C12H20N2S4, synthesized by the reaction of 2,3,5,6-tetrakis(bromomethyl)pyrazine with sodium methanethiolate, crystallizes with a half -molecule in the asymmetric unit.
Tokouré Assoumatine +1 more
doaj +1 more source
, 2023 The structures of a pyrazine dimer (pyrazine)2 and (pyrazine)(benzene) hetero-dimer cooled in a supersonic beam were investigated by the measurement of the infrared spectra in the C–H stretching region with infrared-vacuum ultraviolet (IR-VUV ...
Po-Jen Hsu (4247233) +9 more
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