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Dissertations / Theses on the topic 'Schiff bases Compounds'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

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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2

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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3

Yuen, Lao-Duien. "Part I. Studies involving the formation of pyridoxamine-5'-phosphate Schiff bases and their zinc(II) complexes ; Part II. Activity of partly metallated polymer in the decarboxylation of oxalacetic acid /." The Ohio State University, 1985. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487262825075348.

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4

Caldés, Melis Catalina. "Formación de bases de Schiff de análogos de aminofosfolípidos con compuestos glicantes y efecto competitivo de vitámeros B6." Doctoral thesis, Universitat de les Illes Balears, 2012. http://hdl.handle.net/10803/97354.

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La glicació no enzimàtica de biomolècules consisteix en la modificació irreversible dels seus grups amina per sucres reductors, i s’ha relacionat amb les complicacions patològiques de la diabetis. Una de les dianes de la glicació són els aminofosfolípids, encara que s’han realitzat pocs treballs sobre les seves reaccions. Aquesta tesi es centra en l’estudi de la primera etapa de la glicació (formació d’una base de Schiff) de composts anàlegs d’aminofosfolípids naturals amb composts carbonílics glicants i amb el 5’-fosfat de piridoxal (vitàmer B6 que actua com a inhibidor de la glicació). S’han

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5

Bedioui, Fethi. "Etude électrochimique de complexes de métaux de transition (bases de Schiff et porphyrines) en solution et sous forme d'électrodes modifiées : application à la catalyse électroassistée de réactions organiques." Paris 6, 1986. http://www.theses.fr/1986PA066338.

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Les propriétés électrochimiques des complexes co-base de Schiff (phenylene-bis(salicylideneiminoto)-co, ou Co(II)saloph, et n-methylenepropylene-bis-(salicylideneiminoto)-co, ou co-selnmedpt) et de tetraphenylporphine-co, ou CoTPP, sont utilisées pour étudier la réduction électroassistée d'halogénures organiques, Rx, avec un catalyseur fixe sur support conducteur, en milieu organique. On étudie: 1) la réduction du chlorure de benzyle électrocatalysée par des électrodes de graphite modifiées par du co-saloph et 2) l'oxydation par l'oxygène moléculaire du di-tert-butylphenol, électrocatalysée pa

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6

Griffiths, Kieran. "Catalytic and topological aspects of Schiff base supported 3d-4f polynuclear coordination complexes." Thesis, University of Sussex, 2018. http://sro.sussex.ac.uk/id/eprint/75278/.

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The work presented in this thesis deals with the employment of Schiff base ligands used to synthesise novel 3d-4f polynuclear coordination clusters (PCCs) and the investigation into their potential magnetic, luminescent and catalytic properties. Chapter one provides a general introduction to the chemistry described in the thesis. It includes a general overview of 3d-4f PCC chemistry and the applications of these materials and previous synthetic strategies for the preparation of Schiff base PCCs. A rationale is presented for the ligands employed in the thesis and a synthetic strategy is devised

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7

Tancu, Yolanda. "Monofunctional and dendritic schiff base (N, N′) ruthenium carbene." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/5261.

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8

Chan, Ka-ho, and 陳嘉豪. "Ruthenium-N-heterocyclic carbene and ruthenium acetylide complexes supported by macrocyclic porphyrin or tetradentate schiff base ligands : synthesis, structure and catalytic applications." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2015. http://hdl.handle.net/10722/211130.

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9

Peschard, Olivier. "Déconjugaison par protonation énantioselective : application à la synthèse de la vinylglycine." Rouen, 1989. http://www.theses.fr/1989ROUES017.

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10

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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11

Vincens, Hélène. "Synthèse et utilisation de nouveaux groupements nucléofuges : application à l'alkylation énantiosélective." Rouen, 1987. http://www.theses.fr/1987ROUES010.

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Synthèses d'alpha-aminoacides optiquement actifs, d'alpha-hydroxyacides et d'une nouvelle série d'agents d'alkylation : des benzènesulfonates porteurs d'une fonction éther sur la chaine latérale en ortho

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12

Chausse, Jean-Pierre. "Etude par une methode de melange, de l'organisation et des conformations moleculaires dans les mesophases hautement ordonnees." Clermont-Ferrand 2, 1987. http://www.theses.fr/1987CLF2E383.

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Etude des influences respectives des coeurs aromatiques et des chaines aliphatiques sur la nature du polymorphisme des cristaux liquides thermotropes. La methode de melange binaire consiste a etudier les modificaitons de l'organisation et du comportement moleculaire lorsque le milieu est perturbe par adjonction de molecules a chaines courtes parmi les molecules a chaines longues. Le melange de deux derives des bases de schiff, le 40. 2 et le 40. 8, en phase smectique b est essentiellement utilise. Techniques d'analyse : microscopie, diffraction rx, dilatometrie, spectre rmn du deuterieur et sp

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13

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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14

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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15

Jamal, Eddine Jamal. "Utilisation des nucléofuges chiraux dans la réaction de méthylation énantiosélective des énolates dérivés de la glycine." Rouen, 1986. http://www.theses.fr/1986ROUES028.

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On montre, qu'il est possible d'alkyler avec une bonne énantiosélectivité des énolates prochiraux au moyen d'agents électrophiles à nucléofuges chiraux dérivés du d(+)-glucose. La glycine est ainsi transformée en alanine avec excès énantiomère atteignant 75%. Mise en évidence du rôle des substituants R2 et R3 de l'imine dérivée de l'aminoacide. C'est ainsi qu'en encombrant la région syn de la base de Schiff, les excès énantiomères passent de 0 à 70%. De même des modifications de la structure de l'agent d'alkylation ont permis d'attribuer des centres d'asymétrie importants dans le phénomène de

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16

Brissos, Rosa Maria Faustino. "Copper compounds (Schiff bases) as DNA-Interacting agents." Master's thesis, 2011. http://hdl.handle.net/10451/8900.

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Tese de mestrado em Química Inorgânica Médica (Aplicações em Diagnóstico e Terapia), apresentada à Universidade de Lisboa, através da Faculdade de Ciências, 2011<br>O cobre e o zinco são elementos ubíquos apresentando um papel essencial nos sistemas biológicos. Estas características, aliadas à sua química redox extremamente rica torna-os excelentes aliados no desenho de novos complexos com actividades anti-tumorais [1]. Os conhecimentos adquiridos sobre a estrutura química e processos bioquímicos envolvidos na formação e desenvolvimento de tumores permite-nos conceber novas estratégias para a

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17

Md, Yusof Enis Nadia Binti. "Synthesis, structural characterisation and cytotoxicity study of tin(iv) compounds containing ons schiff bases." Thesis, 2019. http://hdl.handle.net/1959.13/1420998.

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Research Doctorate - Doctor of Philosophy (PhD)<br>There is an urgent need for substantial investigation of non-platinum drugs with higher activity and improved selectivity to address the problem associated with the use of platinum-based compounds as therapeutic agents. In light of this, diphenyltin(IV), dimethyltin(IV) and tin(IV) compounds were synthesised from the Schiff bases of three series of dithiocarbazate (S-2-methylbenzyldithiocarbazate (S1), S-4-methylbenzyl dithiocarbazate (S2), S-benzyldithiocarbazate (S3)) and two series of thiosemicarbazides (4-methyl-3-thiosemicarbazide and 4-p

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18

De, Ponte Justine C. "Structural, physical and biological studies of transition metal Schiff base complexes." Thesis, 2013. http://hdl.handle.net/10413/9864.

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The aims of this work were first to synthesize and fully characterize compounds that may function as bleomycin analogues and, second, to test their anticancer activity in vitro. Three novel tetradentate O,N,N,O Schiff base ligands, H₃L¹, H₂L³ and H₂L³ were synthesized by condensation of three different 1,3-diaminoalkane bridging units with two equivalents of (2,4-dihydroxy–phenyl)-(phenyl)methanone. These ligands contain two neutral imine nitrogen donors and two anionic phenolate oxygen donors for the coordination of metal ions. The choice of ligand was guided by the fact that Cu(II) bleomycin

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19

Salmond, Rosanne C. "Synthesis and characterisation of new Schiff base chelates of platinum group metals." Thesis, 2011. http://hdl.handle.net/10413/8403.

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The principal goal of this work was to synthesise and fully characterise a range of platinum group metal chelates of bis(pyridine-imine) ligands. These four-nitrogen donor Schiff base ligands are underdeveloped relative to their salen (ONNO donor) counterparts. The purified metal complexes were to be tested for their cytotoxicity against cancer cell lines and their mode of interaction (expected to be intercalation) studied. The syntheses, spectroscopic and structural properties of some novel and some already known bis(pyridine-imine) ligands are described. Furthermore, UV-Vis, IR and NMR spect

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20

Bartlett, Malcolm Alan. "Synthesis and characterisation of novel oxovanadium(IV) Schiff base complexes: A study of their electronic spectral properties, peroxide binding affinities, DFT-calculated geometries and spectra, and cytotoxicity towards human carcinoma cells." Thesis, 2012. http://hdl.handle.net/10413/8894.

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A series of five, tetradentate Schiff-base ligands were synthesised and chelated to vanadyl to form oxovanadium(IV) complexes. The ligands, 4,4’-{benzene-1,2-diylbis[nitrilo(1E)phen-1-yl-1ylidene]}- dibenzene-1,3-diol (H2L1), 4,4’-{ethane-1,2-diylbis[nitrilo(1E)phenyl-1-yl-1-ylidene]}dibenzene-1,3-diol (H2L2), 4,4’-{propane-1,2-diylbis[nitrilo(1E)phen-1-yl-1-ylidene]}dibenzene-1,3-diol (H2L3), 4,4’-{(2- hydroxypropane-1,3-diyl)bis[nitrilo(1E)phen-1-yl-1-ylidene]}dibenzene-1,3-diol (H2L4) and 4,4’-{2,2- dimethylpropane-1,3-diyl)bis-[nitrilo(1E)phen-1-yl-1-ylidene]}-dibenzene-1,3-diol (H2L5), ch

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21

Akerman, Kate J. "Structural, physical and biological studies of gold (lll) bis(pyrrolide-imine) Schiff base macrocyclic and pseudomacrocyclic complexes : targeted chemotherapeutic agents." Thesis, 2013. http://hdl.handle.net/10413/10975.

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22

Marques, Rafaela Farelo Silva Tenera. "Syntesis and characterization of luminescent spin crossover iron(III) compounds." Master's thesis, 2020. http://hdl.handle.net/10451/48064.

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Tese de mestrado em Química, Universidade de Lisboa, Faculdade de Ciências, 2021<br>A transição de spin é um fenómeno estudado na área da química de coordenação. Esta propriedade é característica de complexos octaédricos de metais de transição do grupo 3d, entre d 4 e d 7 , uma vez que são os únicos que conseguem apresentar diferentes distribuições eletrónicas para o mesmo número de eletrões nas orbitais d. Esta transição é caraterizada pela troca entre os dois estados de spin, spin-alto e spin-baixo, e ocorre apenas quando as energias de emparelhamento e do campo de ligandos têm a mesma ordem

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23

Ekka, Basnti. "Synthesis and characterization of organometallic Schiff base compounds." Thesis, 2011. http://ethesis.nitrkl.ac.in/2116/1/e-thesis.pdf.

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Ferrocenyl monochalcone was prepared by reacting monoacetyl ferrocene with benzaldehyde and characterized by FTIR and NMR spectroscopy. Ferrocenyl monochalcone was reacted with hydrazine hydrate to form three products. The major orange product has been spectroscopically characterized as ferrocenyl pyrazoline derivative. Cyclopentadienyl manganese tricarbonyl compound was acetylated and reacted with salicylal hydrazide to obtain schiff base compound of acetylcymantrene. The compound was characterized by FTIR,1NMR and CHN analysis.

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24

Liao, Yong-Hong, and 廖永宏. "Photo-Induced Isomrization of Salen Type Schiff Base Compound and Alkynylated Schiff Base Zn and Mg Complexes: Synthesis, Characterization, and Photophysical Properties." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/40433485001669628320.

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碩士<br>國立臺灣大學<br>化學研究所<br>95<br>Various substituted salicylaldehydes have been synthesized via Sonogashira, Ullmann, or other coupling reaction. Some Schiff base metal complexes are obtained by treating the mixture of ligands, metal salt with different diamines. These compounds are characterized by 1H and 13C NMR and mass spectroscopies. The optical properties of these complexes were measured by UV/Vis, and PL (photoluminescent). Some of these complexes (20X) emit orange fluorescence in THF with high quantum efficiencies. Lastly, treatment of diaminomaleonitrile with 2-hydroxy-4-(di-p-tolyla

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25

Liao, Yong-Hong. "Photo-Induced Isomrization of Salen Type Schiff Base Compound and Alkynylated Schiff Base Zn and Mg Complexes: Synthesis, Characterization, and Photophysical Properties." 2007. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0001-2407200712550000.

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26

Lephoto, Mapudumo Lydia. "Synthesis, characterization and application of Schiff base cobalt and zinc complexes as catalysts for CO2 and epoxide copolymerization reaction." Thesis, 2013. http://hdl.handle.net/10210/8529.

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27

Yang, Chih-Sen, and 楊織森. "The study of synthesis and characteristics on Schiff''s based liquid-crystalline compound." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/22056945566286534412.

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碩士<br>國立成功大學<br>化學工程研究所<br>81<br>Schiff''s base 系液晶化合物是以(-CH=N-)為中間連接基(Bridging group)之化合物。本實驗一共合成四種含有不同末端取代基之此型化合物，並探討其特性的差異。四種末端取代基之中，包括兩種推電子基團(CH3 O-，C3H7O-)及兩種拉電子基(F-，CN-)。由實驗結果發現:對於分子鏈長較短之產物I,皆無液晶狀態的出現,其原因可能是分子太短使得分子間的引力太強,造成無液晶現象的出現。但當此系列之產物 I 接上間距( Spacer)之後,則分別出現不同的液晶狀態，其原因可能是產物II分子的分子長度的增加,使得分子側面的引力與分子末端的引力達成某種平衡,因而出現液晶現象.綜合實驗結果發現:分子的長度對於液晶的存在與否影響重大,而且如果分子長度太短,則末端基團是否為推拉電子基團,對於液晶狀態的存在與否,則無決定性的影響.另外,上述產物之單體化及聚合反應亦有概

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28

Lu, Shih-Chieh, and 呂仕傑. "Applications of Schiff Base Salen Compounds to Detect Metal Ions by Cholesteric Liquid Crystal Mixtures and CD Spectra." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/33719697358199821445.

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碩士<br>國立交通大學<br>材料科學與工程學系所<br>102<br>We synthesize a series of compounds with Schiff base Salen ligand which have different chirality, because Salen structure can complex metal ions, we dope these compounds to cholesteric liquid crystals and make them become a liquid crystal chemosensor. The chemosensors can detect metal ions by changing the pitch of cholesteric liquid crystal phases, when the wavelength of reflected light shift, we can see the color of cholesteric liquid crystal phases change by eyes. These liquid crystal mixtures have specific selectivity, only complexing lithium ions (Li+)

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29

Arnold, P. L., C. J. Stevens, N. L. Bell, et al. "Multi-electron reduction of sulfur and carbon disulfide using binuclear uranium(III) borohydride complexes." 2017. http://hdl.handle.net/10454/11622.

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yes<br>The first use of a dinuclear UIII/UIII complex in the activation of small molecules is reported. The octadentate Schiff-base pyrrole, anthracene-hinged ‘Pacman’ ligand LA combines two strongly reducing UIII centres and three borohydride ligands in [M(THF)4][{U(BH4)}2(m-BH4)(LA)(THF)2] 1-M, (M ¼ Li, Na, K). The two borohydride ligands bound to uranium outside the macrocyclic cleft are readily substituted by aryloxide ligands, resulting in a single, weakly-bound, encapsulated endo group 1 metal borohydride bridging the two UIII centres in [{U(OAr)}2(m-MBH4)(LA)(THF)2] 2-M (OAr ¼ OC6H2tBu3

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