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Dissertations / Theses on the topic 'Schiff's Base Derived'

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Published: 5 June 2025

Last updated: 1 August 2025

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1

Jiang, Yu Ting. "The Synthesis, Structure and Magnetic Properties of O-Vanillin-Derived Schiff Base Polynuclear Lanthanide Single-Molecule Magnets." Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/32122.

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This thesis describes the synthesis, characterization and magnetic investigation of homometallic lanthanide complexes based on two different o-vanillin-derived Schiff base ligands: H2ovph and H2ovgrd. The studies were performed using single crystal X-ray diffractometry, Powder XRD and SQUID magnetometry. Chapter 2 focuses on dinuclear systems 1-8 coordinated to the ligand H2ovph and presents their structural and magnetic properties, mainly with respect to their intramolecular interactions. Chapter 3 describes two hexanuclear systems, 9 (DyIII) and 10 (GdIII), with trigonal prism-assembled core

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2

Morale, Francesca. "Metallomesogens derived from Schiff-base chelates and related co-ordination chemistry." Thesis, University of Nottingham, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.269486.

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3

Ross, Andrew Thomas. "Lead, indium and tin complexes of Schiff bases derived from salicylaldehydes." Thesis, Loughborough University, 1998. https://dspace.lboro.ac.uk/2134/26886.

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A number of lead(II) complexes prepared from the reactions of various disalicylaldimines with lead(II) salts have been characterised spectroscopically, and in two cases have been analysed by X-ray diffraction. The reaction of N,N'-bis(salicylidene)ethane-1,2-diamine (H2salen) with Pb(ClO4)2·6H2O produced a novel complex [Pb3(salen)2][ClO4]2 in which the ligand bonds to the lead in two different modes. The interaction of N,N'-bis(3-methoxy-salicylidene)ethane-1,2-diamine with Pb(ClO4)2·6H2O yielded a mononuclear complex wherein the ligand bonds to the lead(II) atoms only through its phenolic ox

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4

Magwa, Nomampondo Penelope. "A spectroscopic study of the electronic effects on copper (II) and copper (I) complexes of ligands derived from various substituted benzyaldehyde- and cinnamaldehyde- based schiff bases." Thesis, Rhodes University, 2010. http://hdl.handle.net/10962/d1006712.

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Several Schiff base ligands, N, N‟-(aryl)benzyaldiimine ligands (R-BEN); N, N‟-(aryl)benzyaldiamine dihydrochloride ligands (R-BENH•2HCl); N, N‟-(aryl)benzyaldiamine ligands (R-BENH); N, N‟-bis(cinnamaldiimine) ligands (R-CA2EN) were synthesized for the investigation of the electronic effect of the substituents at para-position of the Schiff base ligands and their copper complexes. The synthesis of Schiff bases was carried out by reacting a series of para-substituted benzyaldehyde, and para-substituted cinnamaldehyde with ethylenediamine. The imine group of Schiff bases, N, N‟-(aryl)benzyaldii

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5

Mayans, Ayats Júlia. "3d and/or 4f coordination compounds derived from chiral Schiff bases: magnetic and spectroscopic study." Doctoral thesis, Universitat de Barcelona, 2018. http://hdl.handle.net/10803/665178.

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This PhD thesis has been developed in the Molecular Magnetism Group of the University of Barcelona. As its name indicates, the Molecular Magnetism Group is mostly interested in the magnetic study of coordination complexes, mainly with d metals but also with lanthanide cations, which permit magnetic studies but also luminescence studies, which could allow the syntheses of multifunctional products. The group has also interest in supramolecular chemistry and chirality. The main objective of the thesis was the synthesis, magnetic and spectroscopic characterization of coordination complexes deriv

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6

Ruiz-Montes, José. "Alkylations asymetriques de bases de schiff derives de la glycine : application a la synthese d'alpha -amino acides." Paris 6, 1988. http://www.theses.fr/1988PA066518.

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7

Dangel, Brian Douglas. "Efforts towards the development of a universal catalyst system: Transition metal complexes derived from O'Donnell Schiff bases of amino acids." Diss., The University of Arizona, 2000. http://hdl.handle.net/10150/289212.

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Given the success of organic ligands in transition metal catalysis, we incorporated the chirality of amino acids into new ligands for asymmetric catalysis. Moreover, it was hoped that through the incorporation of the bulky benzophenone imine moieties (-N=CPh₂), that the "pendant chirality" of the amino acids could be reflected in the "central chirality" about the transition metal. An achiral diamine serves to bring two optically active amino acid residues in close proximity to form an "active site." The two amido and two imine-nitrogens have been shown to bind Ni(II) in a square planar fashion

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8

Mondal, Kartik Chandra [Verfasser], and A. [Akademischer Betreuer] Powell. "Syntheses, Structures and Properties of f and d-f Complexes using O-vanillin-derived Schiff base Ligands / Kartik Chandra Mondal. Betreuer: A. Powell." Karlsruhe : KIT-Bibliothek, 2011. http://d-nb.info/1014279593/34.

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9

Uziel, Jacques. "Nouvelle methode d'acces aux acides alpha-aminophosphoniques alpha-substitues. Alkylation de bases de schiff derivees de l'acide aminomethylphosphonique." Paris 6, 1990. http://www.theses.fr/1990PA066346.

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Divers acides alpha-aminophosphoniques exotiques sont obtenus par alkylation de bases de schiff derivees de l'acide aminomethylphosphonique. Cette alkylation peut etre catalysee par des complexes du palladium (o) conduisant exclusivement aux produits de monoalkylation. Des acides alpha-aminophosphoniques gamma-delta-ethyleniques ont ete ainsi synthetises avec des rendements de 50 a 80%. D'autre part, cette alkylation peut etre realisee dans des conditions de catalyse par transfert de phase a l'aide de sels d'ammonium quaternaires, utilises en quantite catalytique. De telles conditions, en pres

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10

Thorimbert, Serge. "Alkylations enantioselectives de bases de schiff derivees de la glycine. Application a la synthese d'acides alpha animes fonctionnels." Paris 6, 1993. http://www.theses.fr/1993PA066259.

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La synthese de bases de schiff encombrees au niveau de la fonction imine a ete realisee par une reaction de transimination de l'imine encombree avec le chlorhydrate de l'ester methylique de la glycine. L'allylation enantioselective de ces bases de schiff, a l'aide de complexes chiraux du palladium, a conduit a des exces enantiomeriques de 65%. Une etude des conditions experimentales a permis de proposer un modele permettant d'expliquer l'enantioselectivite observees au cours de cette reaction d'allylation catalytique. La reactivite d'un equivalent protege de l'hydroxylamine ( la n,o-di-ter-but

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11

Léon, Patrick. "Alkylation d'amines par les sels de sulfonium, reaction de type gabriel et synthese de polyamines." Paris 6, 1987. http://www.theses.fr/1987PA066488.

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12

Coutterez, Claire. "Synthèse, caractérisation et étude des propriétés d'oligomères et polymères hétéroarylène vinylènes." Grenoble INPG, 1998. http://www.theses.fr/1998INPG0163.

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Le travail de cette these a concerne la synthese, la caracterisation et l'etude de proprietes d'usage de structures oligomeres et polymeres conjuguees. L'originalite de ces travaux reside d'une part dans l'utilisation d'heterocycles furaniques et thiopheniques comme elements constitutifs des chaines et d'autre part, dans le fait que de nombreux composes oligomeres ont ete cibles, isoles et caracterises. Les possibilites d'application de ces materiaux dans les domaines touchant a l'electronique (conducteurs ou semi-conducteurs), a l'optique (cristaux liquides) et a la luminescence photo- et ele

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13

Achi, Sabah Samira. "Nouvelle voie d'acces aux acides alpha -amines, par catalyse homogene a l'aide de complexes de metaux de transition, synthese de nouveaux complexes phosphores chiraux du tungstene pentacarbonyle." Paris 6, 1987. http://www.theses.fr/1987PA066227.

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14

Ourari, Ali. "Étude de deux réactions d'électrocatalyse : hydrogénation électrocatalytique sur des films de polymères contenant des microparticules de métaux nobles et activation de l'oxygène par des complexes Mn(III) - bases de Schiff." Université Joseph Fourier (Grenoble ; 1971-2015), 1995. http://www.theses.fr/1995GRE10171.

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Ce travail est relatif a l'etude de deux reactions d'electrocatalyse. La premiere partie concerne la mise au point de cathodes moleculaires, realisees par l'inclusion de microparticules de metaux nobles dans des films de polypyrrole fonctionnalise et a leur application en hydrogenation electrocatalytique. L'etude de l'hydrogenation de deux substrats test, le limonene et la carvone, a montre qu'il est possible d'orienter la selectivite de ces electrodes modifiees selon la nature du metal incorpore (pt, pd ou rh). Le resultat le plus significatif est que l'incorporation dans le meme film de poly

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15

Gaudin, Jean-Marc. "Synthèses sélectives à l'aide de complexes du Palladium(0) : élaboration de chaine latérale de stéroïde (glaucastérol), phéromones et alpha-amino esters d'intérêts biologiques." Paris 6, 1986. http://www.theses.fr/1986PA066536.

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Ce travail porte sur l'utilisation de complexe du palladium (0) en catalyse homogène pour la synthèse de molécules d'intérêts biologiques. Trois applications y sont décrites: - la synthèse d'une phéromone secrétée par la reine des abeilles et d'une hormone végétale : l'acide traumatique. La construction du squelette carbone de ces molécules est basée sur une double alkylation d'une bis (aryl sulfonyl) méthane, l'une d'entre elles faisant intervenir un complexe eta (3) allyl palladien fonctionnalisé ; - la synthèse d'alpha-amino esters susceptibles d'être utilisés comme inhibiteur d'enzyme. Cec

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16

Chen, Rong-hsuan, and 陳容萱. "Metallomesogenic Materials Derived from Schiff-Bases and Triketonates." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/15043425325016675704.

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碩士<br>國立中央大學<br>化學研究所<br>99<br>This report is divided into two parts: the first, series I, II respectively the ligands 2, 4a-4c, and their complexes 1, 3a-3c. Synthesis, characterization and mesomorphic properties of new mesogenic derivatives based on 3-hydroxy-3-(naphthalen-2-yl) acrylaldehyde. The second part is the organic liquid crystal based on triketone. All organic derivatives were characterized by 1H-NMR and 13C-NMR spectroscopy and elemental analysis.Their physical properties were characterized by optical microscopy, differential scanning calorimetry, and temperature-dependent powder

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17

LUCAS, HERNANDEZ JOSUE. "Síntesis de complejos de samario con el ligante derivado de base de Schiff Quinolínica. Caracterización y estudio fotofísico." Tesis de Licenciatura, 2016. http://hdl.handle.net/20.500.11799/65409.

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Se determinó la estequiometria metal:ligante (M:L) de las especies formadas durante la titulación espectrofotométrica UV/VIS del ligante derivado de base de Schiff quinolínico, L1 con el nitrato de samario pentahidratado en metanol. El análisis estadístico de los datos permitió proponer la estequiometría metal: ligante para la síntesis de los complejos que fue una mol de sal de samario por 2.5 moles de ligante y favorecer así la formación de complejos con estequiometrías 1M:1L y 1M: 2L. Se sintetizaron en medio acuo-orgánico (agua-etanol), aislaron y purificaron dos complejos con estequiometr

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18

Chiang, Yi-Fen, and 蔣宜芬. "Synthesis and Characterization of Co(II), Ni(II), and Cu(II) Complexes with N,S,O-Containing Schiff Base Derived from Salicylaldehyde and 2-Aminoethanethiol, and of Trimethoxy-Substituted Benzene with Three Thiolate Functional Groups as a Potential Supram." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/89498475958115301466.

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碩士<br>國立彰化師範大學<br>化學系<br>96<br>The synthesis of metal complexes from ligands containing nitrogen, oxygen, and sulfur atoms is a fascinating area to explore because those complexes own potentiality as models for metal enzymes. The reaction of cysteamine hydrochloride with M(II)ions (M = Co, Ni, Cu) followed by addition of salicylaldehyde afforded the dinuclear complexes containing Schiff base ligands {2-[(2-thioethyl)iminomethyl]phenol or 2,2’-di(2-hydroxybenzaliminoethyl)disulfide}. Their structures, determined by x-ray absorption spectrometer and IR analysis, are largely different from previo

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