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Dissertations / Theses on the topic 'Ligand bidentate'

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Published: 4 June 2021
Last updated: 3 February 2022

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1

Fuente, Molina Verònica de la. "Ligand design for palladium and iridium selective catalysts." Doctoral thesis, Universitat Rovira i Virgili, 2011. http://hdl.handle.net/10803/34766.

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This doctoral thesis focuses on the synthesis of new ligands and their application in two types of catalytic process: a) palladium catalysed carbonylation reactions and b) asymmetric reactions (hydrogenation of challenge substrates and C-C bond formation). In the first part of the thesis, the synthesis of a family of new diphosphine ligands and their application in Pd-catalysed carbonylation processes is described. These ligands were first used in the Pd-catalysed methoxycarbonylation of ethane, achieving high activity and selectivity. A mechanistic study on these catalytic systems reveale
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2

Bott, Robyn Kirsty Joy. "Synthesis, structure and catalytic activity of novel bidentate ligand complexes of the group 4 metals." Thesis, University of East Anglia, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.423394.

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3

Pennington, Dale Andrew. "Synthesis, structure and catalytic activity of novel bidentate ligand complexes of the group 4 metals." Thesis, University of East Anglia, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.439899.

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4

Bair, Joseph Spencer. "Synthesis and optical properties of four oligothiophene-ruthenium complexes and synthesis of a bidentate ligand for C-F bond activation /." Diss., CLICK HERE for online access, 2006. http://contentdm.lib.byu.edu/ETD/image/etd1636.pdf.

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5

Bair, Joseph S. "Synthesis and Optical Properties of Four Oligothiophene-Ruthenium Complexes and Synthesis of a Bidentate Ligand for C-F Bond Activation." BYU ScholarsArchive, 2006. https://scholarsarchive.byu.edu/etd/1031.

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Photovoltaic cells and fluorescence sensing are two important areas of research in chemistry. The combination of photon-activated electron donors with electron acceptors provides a strong platform for the study of optical devices. A series of four oligothiophene-ruthenium complexes has been synthesized. Variation in oligothiophene length and bipyridine substitution allowed comparison of these variables on electronic properties. The longer oligothiophenes display lower energy absorption and emission compared to the shorter ones. Aromatic conjugation appears more complete with para-, rather than
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6

Vignolle, J. "Approches de complexes carbéniques hétérosubstitués originaux." Phd thesis, Université Paul Sabatier - Toulouse III, 2006. http://tel.archives-ouvertes.fr/tel-00192093.

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Les complexes carbéniques ont connu un essor considérable ces dernières années. L'introduction générale présente les différentes facettes de ces complexes aux propriétés aussi diverses qu'uniques. D'abord utilisés comme réactifs stoechiométriques, les complexes carbéniques sont devenus des catalyseurs de choix dans de nombreuses réactions. Dans ce contexte, nous présenterons différentes approches pour la synthèse de complexes carbéniques hétérosubstitués.<br /><br />Le premier chapitre présente la synthèse et la chimie de coordination d'aminoarylcarbènes possédant un squelette biphényl ou bina
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7

Vignolle, Joan. "Approches de complexes carbéniques hétérosubstitués originaux." Toulouse 3, 2006. http://www.theses.fr/2006TOU30223.

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8

Gillespie, Jason A. "Design and synthesis of wide bite angle phosphacyclic ligands." Thesis, University of St Andrews, 2012. http://hdl.handle.net/10023/3100.

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By examining structure activity relationships for a given catalytic reaction it is possible to discover what ligand features and parameters lead to stable and highly active/selective catalyst systems. With this knowledge in hand it may be possible to rationally design next generation ligands and catalysts to affect improved substrate transformations, with higher selectivities and faster reaction times. The success of Burk's DuPhos ligands in asymmetric hydrogenation demonstrated that chiral phosphacycles can be a potent source of chiral induction, whilst in a similar vein the work of van Leeuw
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9

Woods, Rebecca J. "Bidentate nitrogen ligands for olefin polymerisation." Thesis, University of Manchester, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.488051.

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10

Giboreau, Pascale. "Bisdithiocarbamates : synthese, protection et marquage au technetium 99m." Université Joseph Fourier (Grenoble), 1996. http://www.theses.fr/1996GRE10170.

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Ce travail presente la synthese de differents ligands bisdithiocarbamates comportant deux fonctions dithiocarbamates sur un meme squelette, ainsi que l'evaluation de leur capacite a complexer le technetium 99m, element largement utilise en medecine nucleaire. Apres avoir rappele, dans les deux premiers chapitres, quelques generalites sur la chimie du technetium et sur les proprietes complexantes des dithiocarbamates, les resultats de nos travaux seront presentes. Trois familles ont ete selectionnees, appartenant a des series aliphatiques lineaire, benzenique ou ferrocenique. Ces choix ont ete
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11

Harding, Michael. "New concepts in asymmetric catalysis." Thesis, University of Sheffield, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284768.

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12

Otter, Carl A. "The synthesis and coordination chemistry of mixed donor pyridine/phenol and pyridine/sulfonamide ligands." Thesis, University of Bristol, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.246241.

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13

Eberhard, Michael R. "New strategies in 9-phosphabicyclononane chemistry." Thesis, University of Bristol, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364955.

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14

Koursarou, Despina. "Complexes and applications of substituted bidentate P, S ligands." Thesis, Cardiff University, 2006. http://orca.cf.ac.uk/56133/.

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In recent years there has been great interest in developing bidentate systems where only one of the atoms is phosphorus. Mixed P, O- and P, N- donor ligands have been extensively applied in catalysis and there is growing interest with respect to potential applications of P, S-ligands. This thesis reports on the synthesis and application of a range of substituted P, S-ligands and the catalytic results obtained are discussed. Chapter 2 describes the synthesis of several bidentate phosphinothiolate and -thioether (P, S) ligands. The P, S ligand l-(diphenylphosphino)butane-2-thiol (L1) was derived
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15

Kleinhans, Dewald Johannes. "Studies in the selective synthesis of bidentate resorcinarene ligands." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/4194.

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Thesis (MSc (Chemistry and Polymer Science))--University of Stellenbosch, 2010.<br>ENGLISH ABSTRACT: Resorcinarenes are macrocyclic products formed from the condensation of aldehydes (aliphatic or aromatic) and resorcinol and have been used in a wide range of applications since their first synthesis. Applications include: HPLC stationary phases for the separation of pyrimidine bases, racemic drugs and isomers, the selective extractions of lanthanides and actinides, as molecular receptors, catalysis, NMR chiral shift agents, GC separations and as starting materials for the synthesis of macr
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16

Martinez, Éric. "Etudes par rmn multinoyaux (1h, 19f, 27a1, 31p) de l'aluminium complexe avec l'adp et le fluor (relation avec l'inhibition de la calcium-atpase par les fluorometaux)." Université Joseph Fourier (Grenoble), 1995. http://www.theses.fr/1995GRE10232.

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La structure des complexes a1-f, adp-a1 et adp-a1-f en solution aqueuse est etudiee par rmn multinoyaux (1h, 19f, 27a1, 31p), en utilisant aussi le pyrophosphate (ppi) comme modele de l'adp. Les resultats montrent que tous les complexes observes a ph 7 sont de geometrie octaedrique. Les complexes binaires a1-f et les complexes ternaires adp-a1-f majoritaires ont ete etudies. Une des deux familles des complexes ternaires ppi-a1-f observees presente une haute stabilite thermodynamique et des couplages 2jf-f bien resolus. Les resultats obtenus avec l'adp (liaison bidentate, aluminium octaedrique)
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17

Rampersad, Marilyn Vena. "The development of N2S2 metal complexes as bidentate ligands for organometallic chemistry." Diss., Texas A&M University, 2005. http://hdl.handle.net/1969.1/4913.

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Electronic and steric parameters for square planar NiN2S2 complexes as bidentate, S-donor ligands have been established. According to the (CO) stretching frequencies and associated computed Cotton-Kraihanzel force constants of (NiN2S2)W(CO)4 adducts, a ranking of donor abilities and a comparison with classical bidentate ligands are as follows: Ni(ema)= > { [NiN2S2]0 } > bipy phen > Ph2PCH2CH2PPh2 > Ph2PCH2PPh2. In addition, we have demonstrated that the NiN2S2 ligands are hemilabile as evidenced from CO addition to (NiN2S2)W(CO)4, which is in equilibrium with the resulting (NiN2S2)W(CO)5 spec
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18

Raymakers, Maria de Fatima Marques. "Modelling of Grubbs type precatalysts with bidentate hemilabile ligands / Fatima Raymakers." Thesis, North-West University, 2012. http://hdl.handle.net/10394/9199.

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Metathesis is a valuable reaction for the production of new alkenes. In the last 50 years, heterogeneous as well as homogeneous catalysts have been used for this reaction. In the homogeneous category are the very successful catalysts designed by the Grubbs group. The first generation Grubbs precatalyst (Gr1) bearing two phosphine ligands was followed after extensive studies by the more active second generation Grubbs precatalyst (Gr2). In Gr2, one of the phosphine ligands is replaced with an N-heterocyclic carbene. Grubbs type precatalysts bearing pyridynyl-alcoholato chelating ligands are per
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19

Hanton, Martin John. "Coordination complexes of bidentate phosphino-imine ligands : synthesis, characterisation and reactivity." Thesis, University of Leicester, 2003. http://hdl.handle.net/2381/33724.

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This thesis describes the synthesis, reactivity and coordination chemistry of a range of bidentate phosphino-imine ligands. The reactivity of the resultant complexes is also probed, while testing of the complexes for catalytic activity in a range of carbon-carbon bond-forming reactions is documented. Chapter 1 introduces the concepts of 'hemi-lability' and 'trans-influence', along with heteroditopic bidentate ligands, and specifically examines imine- and phosphine-based ligands, particularly aminophosphines. The nature of the phosphorus centre in terms of its steric and electronic properties i
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20

Matsumoto, Teruyuki. "Studies on Novel Monoanionic Bidentate Ligands Bearing a Low-coordinated Phosphorus Atom." 京都大学 (Kyoto University), 2010. http://hdl.handle.net/2433/120687.

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21

Osterholm, Sarah. "Photocatalytic CO₂ Reduction Using Manganese and Rhenium Catalysts Containing Bidentate Phosphinoaminopyridine Ligands." Thesis, Université d'Ottawa / University of Ottawa, 2021. http://hdl.handle.net/10393/42669.

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CO2 is generally regarded as a waste product. However, the efficient catalytic reduction of CO2 means that this concept can change to viewing this molecule as a feedstock to produce chemically valuable products. The catalytic reduction of CO2 is a challenge because of its stability, and its reduction into chemically valuable products requires an appropriate catalyst and accessible energy source. While second and third row transition metals have shown considerable promise as photocatalysts for the reduction of CO2 to CO, one of our goals is to elaborate on the metal centers and the ligand envir
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22

Meppelder, Anika [Verfasser]. "New mixed bidentate phosphine ligands and their application in enantioselective transformations / Anika Meppelder." Aachen : Hochschulbibliothek der Rheinisch-Westfälischen Technischen Hochschule Aachen, 2013. http://d-nb.info/1037015606/34.

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23

Smit, Frans Johannes. "Modelling and synthesis of alicyclic bidentate n- and o chelating ligands / F.J. Smit." Thesis, North-West University, 2009. http://hdl.handle.net/10394/5021.

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The well-defined ruthenium-carbene complexes reported by Grubbs and co-workers were the first ruthenium catalysts to show good activity and selectivity in metathesis of acyclic and cyclic olefins. Unfortunately the use of the Grubbs type catalysts is limited to the small scale synthesis of polymers and essential organic reactions, due to cost and instability of the catalyst at elevated temperatures. Some of the most successful Grubbs-type catalysts included hemilabile ligands. By releasing a free coordination site (the so-called "on-demand-open-site") for an incoming nucleophile, hemilabile li
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24

Sutcliffe, V. F. "Synthesis and mechanistic studies on organoplatinum complexes with bidentate heteroaromatic nitrogen-donor ligands." Thesis, Imperial College London, 1985. http://hdl.handle.net/10044/1/37869.

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25

Tomita, Hiroki. "Synthesis and Characterization of Copper Halide Complex Materials." Thesis, KTH, Tillämpad fysikalisk kemi, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-292153.

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Energiförbrukning är ett hett ämne i världen idag, eftersom världens befolkning fortsätter att växa. Som ett resultat ökar också den globala energiförbrukningen snabbt och utsläppen av koldioxid därmed, vilket påverkar global uppvärmning och klimatförändringar. Således kommer utvecklingen av förnybara energikällor att bli en av nödvändighet. Solenergi utgör en förnybar energikälla och uppvisar en enorm potential för att tillgodose det globala energibehovet. En solcell är kan användas för att omvandla solljus till elektricitet. Många typer av solceller har utvecklats under det senaste decenniet
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26

Agbossou, Sénamé. "Ligands aminophosphonites et complexes de metaux des groupes 9 et 10 : syntheses et applications en oligomerisation, telomerisation et carbonatation." Toulouse 3, 1988. http://www.theses.fr/1988TOU30110.

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Preparation et caracterisation d'une serie de comples de palladium, de platine et de rhodium renfermant les ligands dioxa-1,3-phospha-2-aza-6 r-6 phenyl-2-cyclooctane (r=h,phn; r=me,pnme; r=methyl-2allyle, pnallyle)
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27

Czekelius, Constantin Otto. "Enantioselective catalytic conjugate reduction of nitroalkenes and development of new chiral bidentate carbene ligands /." Zürich, 2004. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=15687.

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28

Day, Ben. "Main group metal complexes supported by N,N'-bidentate ligands : synthetic and catalytic investigations." Thesis, University of Sussex, 2013. http://sro.sussex.ac.uk/id/eprint/47205/.

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The work presented in this thesis is divided in to six chapters. Chapter 1 introduces the two main classes of ligands utilised in the research presented here and gives a brief account of the Tishchenko reaction. Chapter 2 describes the synthesis and characterisation of several new examples of amidinate, guanidinate and phosphaguanidinate complexes of magnesium. A number of these compounds are then examined for their activity as pre-catalysts for the Tishchenko reaction in Chapter 3. This chapter includes the screening of pre-catalysts for the synthesis of benzyl benzoate from benzaldehyde, pre
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29

Marinho, Vanda Raquel Delgado. "Synthesis and application of new immobilized chiral bidentate ligands for solid phase asymmetric catalysis." Doctoral thesis, Universidade de Évora, 2010. http://hdl.handle.net/10174/22518.

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Ligandos de fosfina-amida com coordenação P,O- e um grupo OH livre foram sintetizados partindo de o-(dppba) na presença de DCC/DMAP. Com base em estudos computacionais supõe-se que a presença do grupo OH livre actue como grupo de coordenação adicional no catalisador activo. Os ligandos de fosfina-amidaéster com coordenação P, O- foram sintetizados usando EDC/HOBT. Alguns ligandos de fosfina foram aplicados em reacções de catálise assimétrica homogénea como Alquilação e Aminação Alílica Assimétrica, Hidrosililação Assimétrica, Hidrogenação por Transferência de Hidrogénio e Reacção Intermolecula
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30

Manzi, Lucia. "Preparation and characterisation of rhodium complexes with potentially bidentate P-N and P-O ligands." Thesis, University of Liverpool, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366951.

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31

Maresca, von Beckh Widmanstetter Carlo Alessandro. "Palladium and Ruthenium complexes of some bidentate thioether ligands synthesis, characterization and application in homogeneous catalysis." Thesis, University of Oxford, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.509991.

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32

Weir, John James. "Copper(I)-dioxygen reactivity of a series of bidentate ligands and characterization of a Cu(II)-semiquinonato species /." May be available electronically:, 2007. http://proquest.umi.com/login?COPT=REJTPTU1MTUmSU5UPTAmVkVSPTI=&clientId=12498.

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33

Cantalupo, Stefanie A. "Structural and electronic effects of mono- and bidentate perfluorinated alkoxide ligands in late first-row transition metal complexes." Thesis, Boston University, 2013. https://hdl.handle.net/2144/12725.

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Thesis (Ph.D.)--Boston University PLEASE NOTE: Boston University Libraries did not receive an Authorization To Manage form for this thesis or dissertation. It is therefore not openly accessible, though it may be available by request. If you are the author or principal advisor of this work and would like to request open access for it, please contact us at open-help@bu.edu. Thank you.<br>Seven homoleptic first-row transition metal complexes were prepared with the perfluoro-t-butoxide ligand with three- and four-coordinate geometry. The compounds were prepared via metathesis reactions with the f
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34

Petherick, Janice, University of Western Sydney, and School of Science. "Chiral discrimination associated with complex molecules." THESIS_XXXX_SS_Petherick_B.xml, 1999. http://handle.uws.edu.au:8081/1959.7/134.

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This thesis is a report on the design, synthesis and molecular structure of a set of chiral Co(III) metal complexes, in the solution and solid state. The complexes that have been synthesised will potentially intercalate between the base pairs of DNA. The structure of the bound tetradentate ligand, S,S-picchxnMe2 in the solid state was investigated to determine the flexibility of this seemingly rigid ligand. The bidentate ligands, R- and S-glu, were also bound to the Co complex and the differences in the tetradentate ligand were observed. The differences observed in the bonded tetradentate liga
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35

Gray, Andrew Alexander. "Studies on the synthesis of sulfinyl carboxylates and novel chiral sulfur-containing compounds and their application as bidentate ligands." Thesis, Imperial College London, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.430968.

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36

Saang'onyo, Daudi Sayialel. "CATALYTIC CONVERSION OF MONOSACCHARIDES INTO 5-(HYDROXYMETHYL)FURFURAL IN IONIC LIQUIDS USING ALUMINUM COMPLEXES BEARING BIDENTATE (AMINOMETHYL)PHENOLATE LIGANDS." UKnowledge, 2018. https://uknowledge.uky.edu/chemistry_etds/100.

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Currently, the major sources of fuel, energy, and chemicals are nonrenewable fossil resources such as petroleum, natural gas, and coal. Additionally, petroleum is used for the production of most transportation fuels and for the production of about 95% of organic chemicals. However, the production and use of non-renewable fossil fuels are unsustainable. For economic and environmental sustainability, there is a need to search for new and/or renewable resources and technologies for energy, fuels, and chemicals production that have the potential of effectively substituting fossil resources. In thi
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37

Xie, Xiaochen. "New advances in diborane(4) chemistry : synthesis and characterisation of novel diborane(4) compounds with bidentate ligands and their derivatives." Thesis, University of Bristol, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.560450.

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The synthesis and characterisation of a series of novel diborane(4) compounds and their derivatives are described. Four distinct sections will be presented: diborane(4) compounds with bidentate ligands; new polycyclic borazine species; bis-(diamino)-diborane(4) compounds with organotin substituents; bis-(diamino)-diborane(4) compounds with organic substituents.
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38

Chew, Kong Chin. "Complexes of chromium, vanadium and tantalum bearing monoanionic bidentate ligands : potential catalysts for the polymerisation of ethylene and a-olefins." Thesis, Imperial College London, 2000. http://hdl.handle.net/10044/1/7417.

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This thesis describes studies into the chemistry of chromium(VI) bis(imido), vanadium(V) and tantalum(V) in-Lido complexes with monoanionic bidentate ligands. The vanadium and tantalum complexes were targeted as potential catalysts in the polymerisation of ethylene and α-olefins. Chapter 1 highlights several important electronic and structural aspects of the imido ligand, along with the isolobal analogy between Group 4 bent metallocene, Group V imido-cyclopentadienyl and Group VI bis(imido) fragments. Several important polymerisation systems are briefly reviewed, in addition to the discussion
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39

Nemra, Ghinwa. "Comportement électrochimique de nouveaux complexes à liaison Pd-Pd et Pt-Pd stabilisés par des ligands bidentates PhPCHPPh." Grenoble 2 : ANRT, 1986. http://catalogue.bnf.fr/ark:/12148/cb375999899.

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40

Pafford, Robert J. "Synthesis and hydrogenation of iridium complexes with bidentate and water-soluble phosphine ligands : developing novel water-soluble catalysts for hydrogenation of unsaturates /." Thesis, This resource online, 1995. http://scholar.lib.vt.edu/theses/available/etd-11242009-020347/.

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41

Jokić, Nadežda Blagomir [Verfasser], Fritz Elmar [Akademischer Betreuer] Kühn, Branimir S. [Akademischer Betreuer] Jovančićević, and Klaus [Akademischer Betreuer] Köhler. "Synthesis and Applications of Bidentate N-heterocyclic Mono- and Biscarbene Ligands / Nadezda Jokic. Gutachter: Branimir S. Jovančićević ; Klaus Köhler. Betreuer: Fritz Elmar Kühn." München : Universitätsbibliothek der TU München, 2011. http://d-nb.info/1019588942/34.

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42

Aleotti, Flavia. "A 2-pyridyl-2,1-borazaronaphthalene derivative as forefather of a new class​ of bidentate ligands: synthesis and application in luminescent Ir(III) complexes." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/13877/.

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Borazaro compounds (or azaborines) are aromatic compounds in which a C=C unit is replaced by an isoelectronic B-N unit. The possibility to generate chemical diversity has led to an increasing interest in azaborines, especially in the fields of biomedical research and optoelectonics. In particular, Dewar’s synthesis of borazaronaphthalene is a common starting step to obtain different 1,2-azaborines via nucleophilic substitution on the boron atom. Here we present the synthesis of a novel 1,2-azaborine (i.e. 4-methyl-2-(pyridin-2-yl)-2,1-borazaronaphthalene, named FAAH) via functionalization of 2
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43

Patrigeon, Julien. "Elaboration de ligands bidentates supramoléculaires par auto-assemblage d'aminocyclodextrines et de phosphines hydrosolubles - application à la catalyse en milieu aqueux." Thesis, Artois, 2010. http://www.theses.fr/2010ARTO0406/document.

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Des ligands supramoléculaires bidentates P,N hydrosolubles ont été élaborés parauto-assemblage de différentes mono-amino-β-cyclodextrines et d'une phosphinehydrosoluble appropriée. La capacité de ces super-structures à coordiner un métal aété évaluée sur le platine et le rhodium. Les complexes organométalliques ainsiformés ont été totalement caractérisés par spectroscopie RMN.Les tests en hydroformylation en milieu aqueux ont permis de montrer l'efficacitéde tels systèmes, aussi bien en termes de sélectivité qu'en termes d'activité<br>Supramolecular PN heterobidentate ligands have been elabora
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44

Guillaume, Patricia. "Influence de ligands bidentates sur les systèmes Fe-NO/Fe-NO2/Fe-NO3/O2 conçus pour l'activation et le transfert de l'oxygène moléculaire." Nice, 1990. http://www.theses.fr/1990NICE4410.

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La synthèse de nouveaux complexes fer-nitrosyles et fer-nitrates et l'étude de leur capacité à activer puis à transférer l'oxygène moléculaire ont été entreprises. Une série de complexes nitrosyles du fer comportant les ligands bidentes PP (dppe, cdppen, tdppen) et PN (PPh2py) a été synthétisée à partir des dimères Fe(NO)2Cl2. La nature et le comportement des complexes nitrosyles obtenus dépendent non seulement de la configuration du ligand mais aussi de sa basicité. En présence des ligands dppe et dppen, un dérivé dinucléaire du fer a été isolé ou les deux entités métalliques sont reliées ent
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45

Nemra, Ghinwa. "Comportement electrochimique de nouveaux complexes a liaison pd-pd et pt-pd stabilises par des ligands bidentates ph : :(2)pch::(2)pph::(2)." Strasbourg 1, 1986. http://www.theses.fr/1986STR13055.

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L'etude des proprietes redox d'une vingtaine de complexes mono-, di-, tri- et tetranucleaires du palladium et du platine a ete effectuee par des methodes electrochimiques (electrode a disque tournant, voltamperometrie cyclique et coulometrie) associees a des methodes spectroscopiques (spectrophotometrie d'absorption electronique, rpe et rmn). Les differents mecanismes des reactions redox ont ete etablis en fonction de la nature des metaux et des ligands dans le complexe. On montre qu'on peut modifier de maniere controlee les potentiels d'oxydoreduction et la reversibilite des transferts de cha
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46

Boulens, Pierre. "Sulphonamido-phosphorus nickel complexes for the selective oligomerisation of olefins - Exploring dissymmetric ligands and supramolecular strategies." Thesis, Lyon, École normale supérieure, 2014. http://www.theses.fr/2014ENSL0973/document.

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Les alpha oléfines linéaires courtes sont des molécules de base en pétrochimie donc le marché est en constante augmentation notamment pour les oléfines légères (butène-1, hexène-1, octène-1). Ces oléfines, utilisées massivement dans l’industrie des plastiques, sont produites par la réaction catalytique d’oligomerisation de l’éthylène. IFPEN a contribué à développer plusieurs procédés homogènes d’oligomérisation de l’éthylène (AlphaButol, AlphaHexol, AlphaSelect) à base des complexes de titane, chrome ou zirconium. A travers une collaboration avec l’Université d’Amsterdam de nouvelles stratégie
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47

Bonin-Dubarle, Hélène. "Variations autour de la réaction de Suzuki-Miyaura : nouveaux partenaires et nouveaux ligands." Toulouse 3, 2009. http://thesesups.ups-tlse.fr/1545/.

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"Les réactions de couplage carbone-carbone sont des réactions essentielles en chimie organique. Parmi les différentes approches métallo-catalysées, la réaction de Suzuki-Miyaura est celle qui a connu un développement industriel et académique parmi les plus importants, car elle présente de nombreux avantages par rapport aux autres réactions de couplage existantes. Cependant, les acides boroniques utilisés classiquement dans cette réaction présentent des problèmes de stabilité. C'est pourquoi d'autres partenaires de couplage ont été élaborés et utilisés avec succès à la place de ces acides. Parm
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48

Flahaut, Alexandre. "Utilisation de complexes carbènes N-hétérocyclique-palladium dans la réaction de Tsuji-Trost et dans la réaction umpolung d'allylation de dérivés carbonylés." Paris 6, 2008. http://www.theses.fr/2008PA066149.

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Nous avons décrit la synthèse d’une nouvelle famille de ligand NHC-N chiraux bidentates et leur utilisation dans la réaction de Tsuji-Trost. Ces ligands ont été facilement obtenus à partir des sels amino-imidazolium chiraux correspondants synthétisés à partir de sels oxo-imidazoliums sur lesquels la chiralité a été introduite par une réaction de formation d’une imine avec des amines chirales. Une réduction diastéréosélective a permis un accès efficace aux sels amino-imidazoliums. Les complexes NHC-amino et imino des métaux de transition ont été obtenus par traitement des sels imidazoliums avec
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49

Hochreuther, Stephanie [Verfasser], and Rudi van [Akademischer Betreuer] Eldik. "Synthesis and Reactivity of Dinuclear Platinum(II)-Complexes Containing Bidentate N,N- and N,S-Donor Ligands = Synthese und Reaktivität zweikerniger Platin(II)-Komplexe mit zweizähnigen N,N- und N,S-Donorliganden / Stephanie Hochreuther. Betreuer: Rudi van Eldik." Erlangen : Universitätsbibliothek der Universität Erlangen-Nürnberg, 2012. http://d-nb.info/102009415X/34.

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50

RICHERT, JEAN-LUC. "Synthese et reactivite de clusters heterometalliques palladium-fer et platine-fer." Université Louis Pasteur (Strasbourg) (1971-2008), 1989. http://www.theses.fr/1989STR13251.

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Differents clusters mixtes trinucleaires a un ou deux ligands bis(diphenyl)phosphinomethane (dppm) de curs fer-bis platine, platine-bis fer ou palladium-bis fer, sont obtenus par reaction de complexes mononucleaires du platine ou du palladium au degre d'oxydation deux avec des mono- ou dianons carbonylates du fer. Ces reactions ont egalement ete etudiees avec certaines phosphines tertiaires monodentes. Le tetracarbonylferrate disodique reagit avec les composes dinucleaires a deux ligands dppm, palladium-palladium ou platine-palladium pour former selectivement le cluster trinucleaire correspond
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