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Dissertations / Theses on the topic 'Homogeneous metal complex catalysis'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Sharma, Uma Devi. "Mechanistic studies on transition metal complex catalysed homogeneous hydrogenation." Thesis, University of Oxford, 1996. http://ora.ox.ac.uk/objects/uuid:946e1f34-d03a-4d67-8aa9-37a0794985cf.

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The development of systems capable of catalysing the reduction of unsaturated bonds with very high selectivities is one of the greatest successes of asymmetric catalysis. The mechanism by which rhodium complexes catalyse alkene hydrogenation has been effectively established through a combination of kinetic studies and isolation and characterisation of the intermediates in solution. It was hoped to elucidate the corresponding ruthenium catalysed mechanism using similar techniques. Following the synthesis of a selection of ruthenium catalysts, their activity towards the reduction of a selection

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2

Julius, Gerrit Richard. "New transition metal carbene complexes for application in homogeneous catalysis /." Link to the online version, 2005. http://hdl.handle.net/10019/1063.

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3

Julius, Gerrit R. "New transition metal carbene complexes for application in homogeneous catalysis." Thesis, Stellenbosch : University of Stellenbosch, 2005. http://hdl.handle.net/10019.1/1391.

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Thesis (PhD (Chemistry and Polymer Science))--University of Stellenbosch,2005.<br>This study comprises the preparation and full characterisation of new carbene complexes of group 10 metals (Ni, Pd or Pt), the group 9 metal, rhodium, as well as group 6 metals (Cr and/or W). N-heterocyclic carbene (NHC) complexes of nickel and palladium were prepared via oxidative addition of the corresponding carbene precursors imidazolium-, imidazolinium-, pyridinium- and quinolinium chloride salts, to M(PPh3)4 (M = Ni or Pd). Three types of carbene complexes, namely the standard five-membered two-N carbe

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4

Stander-Grobler, Elzet. "Carbene ligand and complex design directed towards application in synthesis and homogeneous catalysis." Thesis, Stellenbosch : Stellenbosch University, 2008. http://hdl.handle.net/10019.1/1139.

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Thesis (PhD (Chemistry and Polymer Science))--Stellenbosch University, 2008.<br>Alkylated acetonitrile that forms during the synthesis of the sulfonium salt, [(Me3)2(MeS)S][BF4], is involved in the formation of new , -unsaturated Fischer-type carbene complexes from (CO)5M=C(OMe)CH2Li (M = Cr, W). Metal migration observed when the substitution product obtained from the reaction of the anionic carbene complexes (CO)5M=C(NMe2)CºC¯ (M = Cr, W) with Ph3PAu+ was left in solution, was also kinetically and theoretically investigated. 1H NMR and quantum mechanical (at the B3LYP level of theory) d

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5

Veenboer, Richard M. P. "Synthesis, study and application of NHC-gold(I) complexes." Thesis, University of St Andrews, 2017. http://hdl.handle.net/10023/12169.

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The development of procedures for the synthesis of valuable organic molecules constitutes an important part of chemistry. The goal of improving the efficiency of existing methodologies can be fulfilled by use of metal catalysts. Recent developments in the field of homogeneous gold catalysis have contributed to these efforts and continued investigations assure future innovations. Chapter 1 summarises the properties of gold and ligand-supported gold(I) complexes and demonstrates how a detailed understanding of its reactivity and possible bonding interactions with various substrates facilitates t

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6

Law, David John. "The synthesis of aminomethylphosphines, their metal complexes and their use in homogeneous catalysis." Thesis, University of Leicester, 1990. http://hdl.handle.net/2381/33778.

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Chapter 1 reviews the literature concerning synthetic routes to amino- methylphosphines and studies of their reactivity together with a brief review of related aminoethylphosphines and isostructural tertiary phosphine analogues to aminomethylphosphines. The preparation and characterisation of the phosphonium salts [R2P(CH2 OH)2]+X- (R = Ph, Cy, C8H14; X- = C1-, HSO4-) and the preparation and characterisation of aminomethylphosphines are presented in Chapter 2. Treatment of the mixed isomers of the salt [C8H14P(CH2OH)2]+X- in boiling sulphuric acid gives the 3,3,1 isomer by decomposition of the

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7

Glover, Leighton Paul. "Transition metal complexes of N-heterocyclic carbenes and their application in homogeneous catalysis." Thesis, University of Sheffield, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.482842.

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8

Evans, Wynne. "The synthesis and properties of selected transition metal-pyrazole complexes and their application towards homogeneous catalysis." Thesis, Open University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.280668.

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9

Tseberlidis, G. "SYNTHESIS OF METAL COMPLEXES WITH BIO-INSPIRED NITROGEN-CONTAINING MACROCYCLIC LIGANDS AND THEIR USE IN CATALYSIS." Doctoral thesis, Università degli Studi di Milano, 2018. http://hdl.handle.net/2434/547325.

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The introduction of a pyridine moiety into the skeleton of a polyazamacrocyclic ligand affects both the thermodynamic properties and the coordination kinetics of the resulting metal complexes. These features have attracted great interest from the scientific community in recent years. The field of application of pyridine-containing macrocyclic ligands ranges from biology to supramolecular chemistry, encompassing MRI, molecular recognition, materials and catalysis. In this thesis is demonstrated the very good catalytic acivity of Ag(I), Cu(I) and Fe(III) Pyridine-containing Ligand complexes. Mor

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10

Lesieur, Mathieu. "Cu and Pd complexes of N-heterocyclic carbenes : catalytic applications as single and dual systems." Thesis, University of St Andrews, 2015. http://hdl.handle.net/10023/7999.

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Nowadays, the requirement to design highly valuable compounds is undoubtedly one of the major challenges in the field of organic and organometallic chemistry. The use of the versatile and efficient N-heterocyclic carbenes (NHCs) combined with transition metals represents a key feature in modern organometallic chemistry and homogeneous catalysis. In the course of this thesis, the straightforward design and synthesis of a library of Pd(0) bearing NHC ligands was achieved. Their catalytic performances (Chapter 1) and their phosphorescence properties in solution (Chapter 2) were disclosed. Current

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11

Swarts, Andrew John. "Novel transition metal complexes based on N,N and N,P ligands as catalysts for ethylene transformation reactions." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/86330.

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12

Hollering, Manuela [Verfasser], Fritz E. [Akademischer Betreuer] [Gutachter] Kühn, and Richard W. [Gutachter] Fischer. "Homogeneous Catalysis and Supramolecular Chemistry: Diverse Applications of Transition Metal Complexes / Manuela Hollering ; Gutachter: Fritz E. Kühn, Richard W. Fischer ; Betreuer: Fritz E. Kühn." München : Universitätsbibliothek der TU München, 2016. http://d-nb.info/1120013887/34.

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13

Dyson, Gavin. "Synthesis of amine functionalised di-N-heterocyclic carbenes and chiral N-heterocyclic carbene-Schiff base transition metal complexes and their application to homogeneous catalysis." Thesis, University of York, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.440968.

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14

González, Miera Greco. "Homogeneous and heterogeneous Cp*Ir(III) catalytic systems : Mechanistic studies of redox processes catalyzed by bifunctional iridium complexes, and synthesis of iridium-functionalized MOFs." Doctoral thesis, Stockholms universitet, Institutionen för organisk kemi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-143343.

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The purpose of this doctoral thesis is to investigate and develop catalytic processes mediated by iridium(III) complexes. By understanding the mechanisms, the weaknesses of the designed catalysts can be identified and be overcome in the following generation. The thesis is composed of two general sections dedicated to the synthesis and applications of homogeneous catalysts and to the preparation of heterogeneous catalysts based on metal-organic frameworks (MOFs). After a general introduction (Chapter 1), the first part of the thesis (Chapters 2-4, and Appendix 1) covers the use of several homog

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15

Schäfer, Christian. "Reactivity of acetylenic ω-keto-esters towards transition metal complexes : synthesis of polycyclic motives of natural products". Thesis, Strasbourg, 2013. http://www.theses.fr/2013STRAF006/document.

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Les travaux décrits dans ce mémoire ont pour objet l’étude de la réactivité des ω-céto-esters acétyléniques vis-à-vis des métaux de transition. Lorsque ces composés sont traités avec une mélange Ti(OiPr)4/iPrMgBr, la formation d’alcools allyliques bicycliques est observée avec une totale diastéréosélectivité par rapport à la jonction de cycle (cis) et une configuration (E) pour la double liaison. Il a été montré que ces produits peuvent être transformés en lactone α,β-insaturé, sous-structures de produits naturels. La cycloisomérisation d’alcynyl cétones catalysées par des sels d’Ag(I) conduit

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16

Ngameni, Emmanuel. "Comportement électrochimique de biporphyrines adsorbées ou en solutions aqueuses acides : Etude du pouvoir catalytique de la biporphyrine de cobalt, CO::(2) FTF4, à l'égard de la réduction de l'oxygène." Brest, 1988. http://www.theses.fr/1988BRES2021.

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17

Vayer, Marie. "Approches éco-compatibles en catalyse homogène : développement de nouvelles méthodologies de synthèse pour la formation de molécules complexes." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLS444/document.

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Grâce à l’utilisation de catalyseurs sacrifiables issus, la plupart du temps, du groupe principal ou de la première période des éléments de transition, des nouvelles méthodologies de synthèse pour accéder à des molécules complexes ont été développées au cours de cette thèse. i) Des bicyclolactones ont été synthétisées par addition intramoléculaire de β-cétoesters sur des diènes-1,3 catalysée par un système coopératif de Bi(OTf)₃ et d’HOTf. ii) le motif 7-alcynylcycloheptatriène a été étudié et a permis d’accéder sélectivement à différents produits issus soit d’une cycloisomérisation d’énynes-1

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18

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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19

Maddox, P. J. "Oxidative addition on homogeneous catalysis." Thesis, University of Oxford, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.379910.

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20

Morales-Morales, David. "New sulphur complexes of platinum group metals as potential homogeneous catalysts." Thesis, University of Essex, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242265.

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21

Eichelsheim, Tanja. "Oligonucleotide based ligands in homogeneous transition metal catalysis." Thesis, University of St Andrews, 2012. http://hdl.handle.net/10023/3168.

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Catalysis plays an important part in our society. Numerous transition metal catalysts have been developed which can convert many different substrates in a wide range of reactions. Catalysis also plays an important role in nature and therefore special catalysts, enzymes, have evolved over time. Enzymes are tremendously efficient giving high yields and selectivities both regio and chemical but have a limited substrate and reaction scope. It was speculated that by combining the two, an ideal catalyst can be obtained. We planned to achieve this by introducing a transition metal, the catalytic cent

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22

鄧煒堂 and Wai-tong Tang. "Homogeneous oxidation of organic substrates by ruthenium, iron and manganese tertiary amine complexes." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1989. http://hub.hku.hk/bib/B31231706.

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23

Tang, Wai-tong. "Homogeneous oxidation of organic substrates by ruthenium, iron and manganese tertiary amine complexes /." [Hong Kong : University of Hong Kong], 1989. http://sunzi.lib.hku.hk/hkuto/record.jsp?B12355203.

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24

Corker, Judith Mary. "Investigations into homogeneous transition metal catalysis by X-ray absorption spectroscopy." Thesis, University of Southampton, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.315760.

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25

Ahmadi, Sara. "Exploring Simple Catalyst for Transfer Hydrogenation of Ketones and Photocatalytic Hydrogen Production Using Homogeneous Metal Complexes." Thesis, Université d'Ottawa / University of Ottawa, 2019. http://hdl.handle.net/10393/39622.

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Transfer hydrogenation has been recognized to be an important synthetic method in both academic and industrial research to obtain valuable products including alcohols. Transition metal catalysts based on precious metals, such as Ru, Rh and Ir, are typically employed for this process. This thesis starts with a study on the potential of an Fe based complex carrying a PNP ligand (2,6-{Ph2PNH}2(NC5H3)) to function as an active transfer hydrogenation catalyst for the conversion of ketones to alcohols. During the analysis of the performance parameters of this potential catalyst, it was discovered t

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26

Crawford, Luke. "Mechanistic insights into enzymatic and homogeneous transition metal catalysis from quantum-chemical calculations." Thesis, University of St Andrews, 2015. http://hdl.handle.net/10023/7818.

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Catalysis is a key area of chemistry. Through catalysis it is possible to achieve better synthetic routes, exploit molecules normally considered to be inactive and also attain novel chemical transformations. The development of new catalysts is crucial to furthering chemistry as a field. Computational chemistry, arising from applying the equations of quantum and classical mechanics to solving chemical problems, offers an essential route to investigating the underlying atomistic detail of catalysis. In this thesis calculations have been applied towards studying a number of different catalytic pr

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27

Cesana, F. "Synthesis of metal complexes with nitrogen donor macrocyclic ligands and their use as homogeneous catalysts in stereoselective syntheses." Doctoral thesis, Università degli Studi di Milano, 2008. http://hdl.handle.net/2434/60915.

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28

Hopkinson, Matthew Neil. "Transition metal catalysis in the presence of fluorinating reagents." Thesis, University of Oxford, 2011. http://ora.ox.ac.uk/objects/uuid:4f29607a-7aad-473b-aabc-af320ea2b1e5.

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In this thesis, the effect of fluorinating reagents on a selection of transition metal-mediated organic transformations was investigated. The first four chapters are focused on gold-catalysed nucleophilic addition processes performed in the presence of “F⁺” sources. Chapter 1 provides a general introduction to homogeneous gold catalysis and summarises the aims and objectives of the project. The effect of the electrophilic fluorinating reagent Selectfluor (82) on the gold-catalysed rearrangement of propargyl acetates 85 is discussed in Chapter 2. α-Fluoroenones 92 resulting from fluorodeacetyla

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29

Niu, Yanhui. "Dendrimer-encapsulated metal nanoparticles: synthesis, characterization, and applications to catalysis." Texas A&M University, 2003. http://hdl.handle.net/1969.1/97.

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The research in this dissertation examines the chemistry and applications of dendrimers in homogeneous catalysis. We examined interactions between dendrimers and charged probe molecules, prepared dendrimer-encapsulated metal nanoparticles in organic solvents, studied size-selectivity of dendrimer-encapsulted catalysts, and designed molecular rulers as in-situ probes to measure the location of dendrimer-encapsulted metal nanoparticles. The intrinsic proton binding constant and a constant that characterizes the strength of electrostatic interactions among occupied binding sites in poly(amidoam

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30

Verho, Oscar. "Transition Metal-Catalyzed Redox Reactions : A Journey from Homogeneous Ruthenium to Heterogeneous Palladium Catalysis." Doctoral thesis, Stockholms universitet, Institutionen för organisk kemi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-96713.

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The first part of the thesis covers the development and utilization of electronically modified (pentaarylcyclopentadienyl)Ru-complexes in the racemization of secondary alcohols. This study revealed that the electronic properties of the substrate were the main factors dictating whether β-hydride elimination or hydride re-addition becomes the rate-determining step of the racemization process. With this knowledge in hand, it proved to be possible to design more efficient racemization protocols by matching the electronic properties of catalyst and substrate. The second part describes mechanistic w

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31

Bah, Juho. "Metal-Free Catalysis for Efficient Synthesis." Doctoral thesis, KTH, Organisk kemi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-144577.

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The strength of efficient metal-free catalysis will be examined in this thesis. Efforts towards more sustainable processes will be demonstrated through implementation of strategies that meet several of the 12 principles of Green Chemistry.In the first part, a stereoselective total synthesis of multiple alkaloids from the Corynantheine and Ipecac families together with their non-natural analogues will be disclosed. A highly efficient, common synthetic strategy is applied leading to high overall yields starting from easily available starting material. Overall operational simplicity and sustainab

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32

Li, Zhilong. "Taming highly reactive metal cations and intermediates in homogeneous catalysis using a weakly coordinating anion." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASS145.

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Dans cette thèse, nous avons étudié le comportement du contreion aluminate faiblement coordinant, [Al(OC(CF3)3)4] dans des processus catalytiques à base de métaux des cationiques comme les sels de gallium(I), d’indium à faible degré d'oxydation ainsi que des sels de lithium. Tout d’abord, nous avons étudié les transformations catalysées par [Ga][Al(OC(CF3)3)4], notamment pour la dihydroarylation des arènes, l'hydrogénation par transfert des alcènes en utilisant le 1,4-cyclohexadiène comme source d'hydrogène, la cyclisation hydrogénante en tandem des arènes et la cycloisomérisation des énynes.

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33

Müller, Ruben S. Ramon. "Homogeneous gold catalysts : development of applications for gold(I) catalysts bearing N-heterocyclic carbene ligands." Thesis, University of St Andrews, 2011. http://hdl.handle.net/10023/2531.

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Recently established as an excellent activator for π-systems, efforts made in gold chemistry have increased enormously, resulting in a new ‘Gold Rush’ in chemistry. This thesis is a small contribution to it. There are two main aspects dominating the following chapters: gold catalysts bearing N-heterocyclic carbenes (NHCs) as supporting ligand, and H₂O assisted catalysis. The initial motivation for the presented work was to specifically demonstrate the potential of [(NHC)AuCl] as suitable catalysts for both known and new organic transformations and to establish these commercially available cata

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34

Becica, Joseph. "Mechanism and application of Lewis and Brønsted acid effects in organotransition metal catalysis." Diss., Temple University Libraries, 2019. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/570159.

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Chemistry<br>Ph.D.<br>The essential questions of the dissertation research described here address concepts in homogeneous catalysis and organometallic chemistry, with a focus on method development for catalytic reaction applications in organic synthesis. The unifying theme throughout the research is the development of rational design principles for cooperative catalysis through both mechanistic and empirical study. Cooperative catalysis – in which multiple catalysts enable increased activity or selectivity versus a single catalyst system – can involve some combination of a transition metal, L

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35

Downs, Emma. "An Investigation of Transition Metal Catalysts for Cyanohydrin Hydration: The Interface of Homogeneous and Heterogeneous Catalysis." Thesis, University of Oregon, 2014. http://hdl.handle.net/1794/18348.

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Acrylic monomers are important materials that represent a large portion of the economy. The current industrial synthesis hydrates cyanohydrins with sulfuric acid, a process which results in large amounts of waste and significant energy costs. A transition metal catalyzed, acid free hydration of cyanohydrins would be beneficial from both economic and environmental standpoints. However, this reaction is challenging, as many catalysts are poisoned by the cyanide released when cyanohydrins degrade. Therefore the development of a catalyst that is resistant to cyanide poisoning is the ideal method t

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36

Miller, Ann Goddard William A. Goddard William A. "Ab initio calculations in heterogeneous and homogeneous catalysis : I. Methanol to gasoline with ZSM-5. II. Carbonyl ligand effects on metal-metal bonds /." Diss., Pasadena, Calif. : California Institute of Technology, 1993. http://resolver.caltech.edu/CaltechETD:etd-09042007-152645.

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37

Gómez, Suárez Adrián. "Synthesis and reactivity studies of mono- and diaurated species bearing N-heterocyclic carbene ligands." Thesis, University of St Andrews, 2014. http://hdl.handle.net/10023/6546.

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The use of Au-NHC complexes in homogenous gold catalysis has become very popular during the last 10 years. The work described in this thesis represents a modest contribution towards a better understanding of the reactivity of these fascinating complexes and the intermediate species involved during gold-catalysed transformations. There are two main themes that permeate the following chapters: a) synthesis and reactivity studies of monoaurated species and b) synthesis and reactivity studies of diaurated species. The main motivation for the work presented herein was to develop more efficient synt

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38

Nama, Devendra Babu. "Synthesis, PGSE diffusion and multidimensional NMR studies on transition metal organometallic species : applications in coordination chemistry and homogeneous catalysis /." Zürich : ETH, 2007. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=17177.

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39

Kuniyil, Rositha. "Computational Mechanistic Studies on the Transition Metal Catalyzed Activation of Carbon Dioxide." Doctoral thesis, Universitat Rovira i Virgili, 2017. http://hdl.handle.net/10803/461057.

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El mecanisme d’exemples representatius de reaccions involucrant diòxid de carboni i complexos amb metalls de transició han estat caracteritzats amb l’ajuda d’una varietat de mètodes computacionals: DFT (Teoria del funcional de la densitat) i models micro-cinètics. Tres procesos diferents han estat analitzats. La carboxilació d’al·lens, catalitzada per pal·ladi i assistida per alumini, s’ha trobat que té lloc mitjançant un mecanisma complex que pot explicar totes les dades experimentals aportades per reaccions estequiomètriques de passos específics per part de Hazari i col·laboradors. S’ha trob

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40

Fallah, Hengameh. "Reductive Functionalization of 3D Metal-Methyl Complexes and Characterization of a Novel Dinitrogen Dicopper (I) Complex." Thesis, University of North Texas, 2017. https://digital.library.unt.edu/ark:/67531/metadc984200/.

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Reductive functionalization of methyl ligands by 3d metal catalysts and two possible side reactions has been studied. Selective oxidation of methane, which is the primary component of natural gas, to methanol (a more easily transportable liquid) using organometallic catalysis, has become more important due to the abundance of domestic natural gas. In this regard, reductive functionalization (RF) of methyl ligands in [M(diimine)2(CH3)(Cl)] (M: VII (d3) through CuII (d9)) complexes, has been studied computationally using density functional techniques. A SN2 mechanism for the nucleophilic attack

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Ke, Diandian. "Cooperative catalysis by 2-indenediide pincer complexes." Thesis, Toulouse 3, 2016. http://www.theses.fr/2016TOU30154/document.

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Cette thèse décrit l'étude réalisée sur des complexes portant le ligand pince indendiide, incluant leur synthèse et caractérisation ainsi que leur activité en catalyse coopérative métal/ligand de cycloisomérisation d'acide alcynoïques et N-tosyl alkynylamides. Le premier chapitre fait un point bibliographique non-exhaustif du domaine de la catalyse coopérative métal/ligand, des premiers travaux précurseurs de Noyori sur les processus d'hydrogénation avec des complexes amido de ruthénium aux récents travaux de Milstein avec des complexes pince à base de pyridine déaromatisée. Le deuxième chapit

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Patil, Smita S. "The preparation and use of metal salen complexes derived from cyclobutane diamine." Diss., Kansas State University, 2014. http://hdl.handle.net/2097/18670.

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Doctor of Philosophy<br>Department of Chemistry<br>Christopher J. Levy<br>The helix is an important chiral motif in nature, there is increasing development in field of helical transition metal complexes and related supramolecular structures. Hence, the goals of this work are to apply the principles of helicity in order to produce metal complexes with predictable molecular shapes and to study their properties as asymmetric catalysts. Computational studies suggest that the (1R,2R)-cyclobutyldiamine unit can produce highly twisted salen complexes with a large energy barrier between the M and P h

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43

Afewerki, Samson. "Development of catalytic enantioselective C-C bond-forming and cascade transformations by merging homogeneous or heterogeneous transition metal catalysis with asymmetric aminocatalysis." Doctoral thesis, Mittuniversitetet, Avdelningen för naturvetenskap, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-23605.

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Chiral molecules play a central role in our daily life and in nature, for instance the different enantiomers or diastereomers of a chiral molecule may show completely different biological activity. For this reason, it is a vital goal for synthetic chemists to design selective and efficient methodologies that allow the synthesis of the desired enantiomer. In this context, it is highly important that the concept of green chemistry is considered while designing new approaches that eventually will provide more environmental and sustainable chemical synthesis.The aim of this thesis is to develop th

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Zanini, Margherita. "Transition metal-catalyzed reactions of heteroatom-substituted alkynes." Doctoral thesis, Universitat Rovira i Virgili, 2020. http://hdl.handle.net/10803/670898.

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La catàlisi homogènia d'or(I) és una eina per a la construcció de complexitat molecular mitjançant l'activació selectiva d'enllaços múltiples C-C. El nostre grup ha desenvolupat una sèrie de reaccions d'alquins amb alquens catalitzades per or(I) tant en forma intramolecular com intermolecular. Aquestes reaccions s’inicien amb l'atac nucleofílic del doble enllaç a l'alquí per formar un intermedi tipus ciclopropil carbé d'or(I) que evoluciona per donar diferents productes. En aquesta tesi doctoral es descriu una sèrie de noves reaccions intermoleculars de alquens amb alquins substituïts amb

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45

Vuong, Khuong Quoc Chemistry Faculty of Science UNSW. "Metal complex catalysed C-X (X = S, O and N) bond formation." Awarded by:University of New South Wales. Chemistry, 2006. http://handle.unsw.edu.au/1959.4/23015.

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This thesis describes the catalysed addition of X-H bonds (X = S, O and N) to alkynes using a range of novel rhodium(I) and iridium(I) complexes containing hybrid bidentate phosphine-pyrazolyl, phosphine-imidazolyl and phosphine-N heterocyclic carbene (NHC) donor ligands. The synthesis of novel bidentate phosphine-pyrazolyl, phosphine-imidazolyl (P-N) and phosphine-NHC (PC) donor ligands and their cationic and neutral rhodium(I) and iridium(I) complexes [M(P N)(COD)]BPh4, [M(PC)(COD)]BPh4, [Ir(P-N)(CO)2]BPh4 and [M(P-N)(CO)Cl] were successfully performed. An unusual five coordinate iridium com

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46

Pearce, Gordon M. "Synthesis, adsorption and catalysis of large pore metal phosphonates." Thesis, University of St Andrews, 2010. http://hdl.handle.net/10023/823.

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The synthesis and properties of metal phosphonates prepared using piperazine-based bisphosphonic acids have been investigated. The ligands N,N’-piperazinebis(methylenephosphonic acid) (H₄L), and the 2-methyl (H₄L-Me) and 2,5-dimethyl (H₄L 2,5-diMe) derivatives have been prepared using a modified Mannich reaction. Hydrothermal reaction of gels prepared from metal (II) acetates and the bisphosphonic acids results in the synthesis of four structures: STA-12, Ni VSB-5, Co H₂L.H₂O and Mg H₂L. STA-12, synthesised by reaction of Mn, Fe, Co or Ni acetate with H₄L or H₄L-Me, has been investigated furth

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47

Lillo, García Vanesa. "Transition metal catalysed functionalisation of c=c through boron chemistry: a tandem approach." Doctoral thesis, Universitat Rovira i Virgili, 2009. http://hdl.handle.net/10803/9101.

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Los compuestos organoborados son considerados de gran interés en síntesis orgánica debido a que el enlace C-B puede ser transformado en una amplia variedad de grupos funcionales. La adicción catalítica de H-B o B-B a enlaces C-C insaturados se considera uno de los procesos catalíticos con mayor control selectivo en la formación de dichos intermedios organoborados. <br/>En el capítulo primero de la presente tesis se muestra la evolución a través de la bibliografía de las tres principales reacciones de adición catalítica de boro a alquenos, como son hidroboración, diboración y -boración.

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48

Fabre, Indira. "Experimental and theoretical mechanistic studies of transition-metal free and copper-catalyzed reactions." Thesis, Paris Sciences et Lettres (ComUE), 2017. http://www.theses.fr/2017PSLEE033/document.

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Cette thèse présente des travaux de méthodologie de synthèse et des études mécanistiques. Une approche complémentaire est utilisée, avec des résultats expérimentaux et des résultats théoriques issus de calculs DFT. Trois réactions ont été étudiées. La première réaction est l’alpha-arylation de cétones énolisables en l’absence de métal de transition. Elle se déroule en présence de DMF et de tBuOK. L’étude mécanistique met en évidence la formation d’une espèce riche en électrons par déprotonation du solvant. La deuxième réaction étudiée est la N-arylation de pyrazoles via la formation d’aryldiaz

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49

Matthes, de Schwalmstadt Jochen. "Utilisation de la spectroscopie RMN à l'état gazeux, liquide et solide pour l'étude de la mobilité du dihydrogène et de l'interaction hydrogène métal dans des complexes des métaux de transition." Toulouse 3, 2004. http://www.theses.fr/2004TOU30044.

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La thèse est consacrée à l'analyse de la mobilité et de l'interaction du dihydrogène dans et avec des complexes de transition par la spectroscopie RMN à l'état gazeux, liquide et solide. Le sujet est traité en quatre chapitres indépendants. Dans le premier chapitre des études sur l'échange quantique de ligand dihydrogène dans les complexes synthétisés [RuCl(H)2(dppe)2]+[BF4]- (1), [OsH(H)2(dppe)2]+[BF4]- (2), et [RuH(H)2(dppe)2]+[BF4]- (3) ont été réalisées. Jusqu'à présent, il n'existe aucune méthode pour déterminer les fréquence de tunnelling rotateur expecter pour ces complexes dans la gamm

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50

Theurkauff, Gabriel. "Investigations on the stereoselective polymerization of α-olefins by single-site group IV metal catalysts". Thesis, Rennes 1, 2014. http://www.theses.fr/2014REN1S158/document.

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Les travaux présentés dans ce manuscrit ont trait à la catalyse de polymérisation des α-oléfines sont présentés en 4 parties distinctes. La première est consacrée à l'étude d'un système catalytique pour la production de polypropylène élastomère. L'analyse poussée des polymères produits et la caractérisation complète des catalyseurs utilisés a permis de montrer la présence de deux homopolymères sous forme de blende. La seconde partie porte sur la copolymérisation de monomères bifonctionnels vinyl-vinylidène avec le propylène. La caractérisation des polymères a permis de révéler la réactivité pa

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