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Diseño lógico de bases de datos
Este recurso virtual de aprendizaje proporciona una sólida comprensión de los principios básicos y la importancia del diseño lógico en el desarrollo de bases de datos eficientes y eficaces, a través de presentaciones interactivas y videos ...
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Proyecto aplicado de bases de datos
Este objeto virtual de aprendizaje presenta un video detallado que explica la implementación práctica de un proyecto utilizando bases de datos, destacando técnicas y estrategias esenciales para el manejo eficiente de la información.Implementar un ...
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Mira : aparato secundario de medir bases
Mira de la regla geodésica del aparato secundario para medir bases ...
Brunner Frères (París)
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Zeitschrift für anorganische und allgemeine Chemie, 1964
AbstractComplex compounds of SCHIFF's bases of 3‐aldehydo‐salicylic acid with iron (both ferrous and ferric), manganese and vanadium have been prepared and their properties studied. The probable structures of the complexes have also been discussed from the view point of their chemical properties and magnetic moment values.
Sailendra Nath Poddar, Kamalendu Dey
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AbstractComplex compounds of SCHIFF's bases of 3‐aldehydo‐salicylic acid with iron (both ferrous and ferric), manganese and vanadium have been prepared and their properties studied. The probable structures of the complexes have also been discussed from the view point of their chemical properties and magnetic moment values.
Sailendra Nath Poddar, Kamalendu Dey
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Zeitschrift für anorganische und allgemeine Chemie, 1972
AbstractPreparation and properties of the following NiII and CuII complexes of the Schiff base derived from acetophenone and ethylenediamine (BAPE) and also of the mixed NiII and CuII chelates with BAPE and acetylacetone (acac‐H) are described: equation image In each case the Schiff base, BAPE, acts as a neutral bidentate ligand.
K. Dey +3 more
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AbstractPreparation and properties of the following NiII and CuII complexes of the Schiff base derived from acetophenone and ethylenediamine (BAPE) and also of the mixed NiII and CuII chelates with BAPE and acetylacetone (acac‐H) are described: equation image In each case the Schiff base, BAPE, acts as a neutral bidentate ligand.
K. Dey +3 more
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Journal of Applied Polymer Science, 2015
ABSTRACTFour chiral poly Schiff bases were synthesized via polycondensation between l‐lysine and p‐benzoquinone, 1,4‐naphthoquinone, dibenzoyl, and 2,3‐butanedione, respectively. Subsequently, the silver coordination polymers of the chiral poly Schiff base were prepared upon silver ions coordinating with the chiral poly Schiff bases.
Hengnong Li +6 more
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ABSTRACTFour chiral poly Schiff bases were synthesized via polycondensation between l‐lysine and p‐benzoquinone, 1,4‐naphthoquinone, dibenzoyl, and 2,3‐butanedione, respectively. Subsequently, the silver coordination polymers of the chiral poly Schiff base were prepared upon silver ions coordinating with the chiral poly Schiff bases.
Hengnong Li +6 more
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Journal für Praktische Chemie, 1971
AbstractThe condensation of acetylacetone with anthranilic acid in presence of piperidine as the condensing agent gives acetylacetoneanthranilic acid SCHIFF'S base (H2AA) which forms complexes with Zinc (II) and Palladium (II). The dissociation constants of H2AA have been determined by interpolation at half n̄ values and also by algebraic method which ...
R. K. Mehta, R. K. Gupta, V. C. Singhi
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AbstractThe condensation of acetylacetone with anthranilic acid in presence of piperidine as the condensing agent gives acetylacetoneanthranilic acid SCHIFF'S base (H2AA) which forms complexes with Zinc (II) and Palladium (II). The dissociation constants of H2AA have been determined by interpolation at half n̄ values and also by algebraic method which ...
R. K. Mehta, R. K. Gupta, V. C. Singhi
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Applied Organometallic Chemistry, 2019
Three half‐sandwich ruthenium(II) complexes with hydroxyl group functionalized Schiff‐base ligands [Ru(p‐cymene)LCl] (2a‐2c) have been synthesized and characterized. All ruthenium complexes were fully characterized by 1H and 13C NMR spectra, mass spectrometry and infrared spectrometry.
Wei‐Guo Jia +2 more
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Three half‐sandwich ruthenium(II) complexes with hydroxyl group functionalized Schiff‐base ligands [Ru(p‐cymene)LCl] (2a‐2c) have been synthesized and characterized. All ruthenium complexes were fully characterized by 1H and 13C NMR spectra, mass spectrometry and infrared spectrometry.
Wei‐Guo Jia +2 more
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Journal of Physical Organic Chemistry, 2018
AbstractEffect of substituents on the ultraviolet (UV) spectra of supermolecular system involving silver nanoparticles (AgNPs) and Schiff bases was investigated. AgNPs and 49 samples of model compounds (MC), bi‐aryl Schiff bases containing hydroxyl (XBAY, involving 4‐OHArCHNArY, 2‐OHArCHNArY, XArCHNAr‐4′‐OH, and XArCHNAr‐2′‐OH), were synthesized ...
Chao‐Tun Cao +3 more
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AbstractEffect of substituents on the ultraviolet (UV) spectra of supermolecular system involving silver nanoparticles (AgNPs) and Schiff bases was investigated. AgNPs and 49 samples of model compounds (MC), bi‐aryl Schiff bases containing hydroxyl (XBAY, involving 4‐OHArCHNArY, 2‐OHArCHNArY, XArCHNAr‐4′‐OH, and XArCHNAr‐2′‐OH), were synthesized ...
Chao‐Tun Cao +3 more
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