Zobrazeno 1 - 10
of 22
pro vyhledávání: '"G. B. El-Hefnawy"'
Autor:
Mohamed A. El-Borai, Seham A. Ibrahim, Hatem F. El-Sayed, Samy S. Aser, Hala F. Rizk, G. B. El-Hefnawy
Publikováno v:
Fibers and Polymers. 17:729-737
A series of new azomethine dyes based on pyrazolone system have been synthesized via different routes. The solvatochromism for the dyes was evaluated with respect to spectroscopic properties in various solvents. The dyes were applied as disperse dyes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4931d428dd46107b08c0b9a615ed5e89
https://doi.org/10.1007/s12221-016-5362-x
https://doi.org/10.1007/s12221-016-5362-x
Publikováno v:
Fibers and Polymers. 14:2061-2068
Three series of mono and disazo disperse dyes were synthesized from 2-amino-4-(pyridin-3-yl) thiazole. The structure of the synthesized dyes was confirmed by elemental analysis, ultraviolet-visible, infrared, proton and carbon nuclear magnetic resona
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0c7a65b670acea60e1d995aaeec17699
https://doi.org/10.1007/s12221-013-2061-8
https://doi.org/10.1007/s12221-013-2061-8
Publikováno v:
Chemical Engineering Journal. 217:460-465
Polyaniline (PANI) nanoparticles in the bulk solution were synthesized by the oxidative polymerization of aniline and ammonium peroxodisulfate as an oxidant in aqueous medium without the aid of any acid. The scanning electron microscopy showed PANI n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a8225800d211605c945459650c079ed0
https://doi.org/10.1016/j.cej.2012.11.099
https://doi.org/10.1016/j.cej.2012.11.099
Publikováno v:
Journal of Thermal Analysis and Calorimetry. 109:1397-1405
A series of Mn(II), Co(II), Ni(II), Cu(II) and Zn(II) complexes of azo-compounds containing hydroxyl quinoline moiety have been synthesized and characterized by elemental analysis, molar conductance, magnetic moments, IR, electronic and ESR spectral
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c7e61e1cd5428de45831130c217f9a3b
https://doi.org/10.1007/s10973-011-1911-0
https://doi.org/10.1007/s10973-011-1911-0
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 98:833-838
Reaction of 2,3-diformylfurane and ethylenediamine in ethanol in the presence of nickel(II) acetate gives an imine-carbinolamine macrocyclic complex whilst its reaction with propylenediamine gives a diimine macrocyclic complex. The imine-carbinolamin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c7ac94c57a9611b312f276d67a0c88d
https://doi.org/10.1002/bscb.19890981103
https://doi.org/10.1002/bscb.19890981103
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 99:305-313
The new macrocyclic imine-carbinolamine complexes of nickel(II) have been prepared by reaction of 2,3-diformylfurane and aliphatic diamines in ethanol in the presence of nickel(II) acetate or by simple addition reaction of the tetraaza-macrocyclic li
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d464f8dbec4af0d96d186a446ba83e3d
https://doi.org/10.1002/bscb.19900990504
https://doi.org/10.1002/bscb.19900990504
Publikováno v:
Chinese Journal of Chemistry. 27:1359-1364
3-Amino-1-phenyl-4,5-dihydro-1H-pyrazol-5-one (1) was used as starting material for the synthesis of a number of azo compounds 3a–3c and azomethine derivative 4. The deblocking of 3a–3c and 4 gave rise to 5a–5c and 6 in which a free amino was r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb0eec61e15023cb57c68e28bde12f7b
https://doi.org/10.1002/cjoc.200990227
https://doi.org/10.1002/cjoc.200990227
Publikováno v:
Thermochimica Acta. 414:105-113
Complexes of 5-(phenylazo)-2-thiohydantoin (L 1 ) and 5-(2-hydroxyphenylazo)-2-thiohydantoin (HL 2 ) with Co(II), Ni(II) and Cu(II) salts have been synthesised and characterized by elemental analysis, conductivity, magnetic susceptibility, UV-Vis, IR
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::344e23afd51568376a40b622d733c810
https://doi.org/10.1016/j.tca.2003.11.021
https://doi.org/10.1016/j.tca.2003.11.021
Publikováno v:
Analytical and Bioanalytical Chemistry. 376:220-225
Indomethacin is a non-steroidal anti-inflammatory drug possessing anti-pyretic and analgesic properties. A fully validated square-wave adsorptive cathodic stripping voltammetric procedure is described for determination of indomethacin. The procedure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b56257744d5d54c1204e5c3ed64899df
https://doi.org/10.1007/s00216-003-1908-z
https://doi.org/10.1007/s00216-003-1908-z
Publikováno v:
Transition Metal Chemistry. 28:168-175
A new series of hexacoordinate cobalt(II), nickel(II) and copper(II) complexes of 5-(2-carboxyphenylazo)-2-thiohydantoin HL having formulae [LM(OAc)(H2O)2] · nH2O (M = CoII, CuII and NiII), [LM′Cl(H2O)2] · nH2O (M′ = CoII and NiII), [LCuCl(H2O)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::110d39eed232b6728c839aed65026d41
https://doi.org/10.1023/a:1022968604281
https://doi.org/10.1023/a:1022968604281