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Dissertations / Theses on the topic 'Ligand Non Innocence'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Adhikari, Debashis. "Synthesis, structure and reactivity studies of nickel pincer complexes and evaluating redox non-innocence of the ligand." [Bloomington, Ind.] : Indiana University, 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3380057.

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Thesis (Ph.D.)--Indiana University, Dept. of Chemistry, 2009.<br>Title from PDF t.p. (viewed on Jul 19, 2010). Source: Dissertation Abstracts International, Volume: 70-12, Section: B, page: 7557. Adviser: Daniel J. Mindiola.

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2

Brunel, Paul. "Complexes pince et cooperativité métal/ligand : application en catalyse." Thesis, Toulouse 3, 2018. http://www.theses.fr/2018TOU30275/document.

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Ce travail de thèse porte sur la chimie organométallique des complexes pince indényle/indénediide de palladium et de platine et leurs applications en catalyse coopérative métal-ligand. Le premier chapitre de ce manuscrit fait un point bibliographique non-exhaustif du domaine de la coopérativité métal-ligand, des travaux de Noyori sur l'hydrogénation asymétrique, jusqu'aux récents travaux de Milstein avec les ligands désaromatisés. Les ligands pince sont également présentés. Du premier exemple PCP décrit par Shaw jusqu'au CNC développé par Bezuidenhout. La versatilité de ces ligands est illustr

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3

King, Evan. "Metal-Ligand Multiple Bonds in High-Spin Complexes." Thesis, Harvard University, 2012. http://dissertations.umi.com/gsas.harvard:10356.

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The chemistry of late first row transition metals supported by dipyrromethane and dipyrromethene ligands bearing sterically bulky substituents was explored. Transition metal complexes (Mn, Fe, Co, Ni, Zn) of the dipyrromethane ligand 1,9-dimesityl-5,5-dimethyldipyrromethane (dpma) were prepared. Structural and magnetic characterization (SQUID, EPR) of the bis-pyridine adducts \((dpma)Mn(py)_2\), \((dpma)Fe(py)_2\), and \((dpma)Co(py)_2\) showed each tetrahedral divalent ion to be high-spin, while square planar \((dpma)Ni^{II}(py)_2\) and tetrahedral \((dpma)Zn(py)_2\) were shown to be diamagne

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4

Irwin, Mark Robert Floyd. "The synthesis and characterisation of metal complexes containing chemically reduced bipyridyl ligand systems." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:44dd8d43-01cf-4a2a-ab66-c7cab1d9201f.

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This thesis describes the synthesis and characterisation of metal complexes that contain chemically reduced bipyridyl ligands. The crystal structures of twenty-six novel complexes are reported alongside detailed discussions on the electronic and spectroscopic effects and trends associated with the different oxidation states within these species. Chapter One introduces the isomers of bipyridine and their redox chemistry, the concept of non-innocent ligands and the spectroscopic techniques that are currently used in determining ligand oxidation states. Subsequently, examples of main group, trans

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5

Walli, Adam. "Biomimetic Copper(I)-Mediated Activation of Dioxygen and Redox Non-Innocence in Copper(II) Complexes of Bis(oxazoline)s." Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2014. http://hdl.handle.net/11858/00-1735-0000-0023-9636-9.

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6

MUSTIELES, MARÍN Irene. "Oxidation of phosphasalen complexes." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLX078/document.

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Les ligands phosphasalen développés au sein du laboratoire peuvent être considérés comme les analogues phosphorés des ligands salen dont ils diffèrent par la présence de groupements iminophosphorane à la place des imines. L’introduction de ces fonctions a d’importantes conséquences sur les propriétés de ces ligands, qui sont plus électrodonneurs et plus flexibles que les dérivés salen correspondants, capables de stabiliser des métaux à haut degré d’oxydation. Ces ligands ont également un caractère redox non-innocent, une propriété très étudiée de nos jours tant en chimie de coordination qu’en

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7

Aguirre, Fondevila Adiran de. "Non-innocent ligands: from proton shuttle to photo-activation." Doctoral thesis, Universitat Rovira i Virgili, 2019. http://hdl.handle.net/10803/668399.

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En la majoria dels exemples clàssics de catàlisis homogènia, el focus cau en el centre metàl·lic, el qual és el que duu a terme la reacció, mentre que els lligands juguen un rol principalment d'espectadors. Així, l'aproximació inicial per modificar la reactivitat dels sistemas era reemplaçar el metall. Aquest ha sigut el punt inicial en la majoria dels treballs en catálisis homogènia amb complexos organometàl·lics. La modificació de les propietats estèriques o electròniques dels lligands afecta el metall, i pot tindre un gran impacte en el resultat de la reacció: rendiment més alt, millor sele

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8

Salanouve, Elise. "Complexes de métaux non-nobles de fer et de nickel portant des ligands redox non-innocents et leurs applications en catalyse : de l'activation C-H aux réactions de couplages croisés." Thesis, Paris 6, 2014. http://www.theses.fr/2014PA066620/document.

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Ce travail de thèse s’est intéressé au développement de complexes de métaux non-nobles portant des ligands non-innocents et leurs applications en catalyse comme alternatives efficaces aux complexes de métaux nobles dans un contexte de fortes préoccupations économiques et environnementales. Ainsi, nous avons synthétisé et caractérisé des complexes de fer et de nickel portant des ligands non-innocents, à l’aide de différentes techniques spectroscopiques. Ces ligands pourraient moduler la réactivité du métal et étendre ainsi le champ d’applications de ces métaux de transition. Dans le but de déve

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9

Reinhardt, Maxwell James. "Metal complexes containing non-innocent ligands for functional materials." Thesis, University of Edinburgh, 2013. http://hdl.handle.net/1842/11723.

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The existence of complexes of that display non-innocence has been of interest in the field of coordination chemistry since the investigations of square-planar dithiolene complexes of the late transition metals in the 1960s. The ligands used in these systems are termed “non-innocent” when bound to a number of the late transition metals, because the orbital energy levels are similar to those of the central metal ion. This allows there to be significant electron delocalisation over the complex with the potential for the complexes to exist in a number of electronic states due to the combined elect

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10

Mele, Andrea. "Preparation and study of diiron complexes, featuring redox ligands, inspired by the active site of [FeFe]-Hydrogenases." Thesis, Brest, 2019. http://www.theses.fr/2019BRES0100.

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L’hydrogénase [FeFe] est une enzyme capable de catalyser efficacement la réduction des protons en hydrogène moléculaire. La structure du site actif, appelé le cluster-H a été élucidée à la fin des années 90. Depuis, plusieurs systèmes modèles ont été synthétisés en essayant de reproduire ses caractéristiques uniques. Le cluster {4Fe4S}, présent dans le site actif joue un rôle crucial en tant que cofacteur redox, lié de manière covalente à un système difer qui est le site de la conversion H+/H2. Il se comporte comme un réservoir d'électrons capable d'accepter et de partager des électrons avec l

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11

Jacquet, Jérémy. "Catalyse coopérative avec les ligands rédox non-innocents : processus radicalaires et organométalliques." Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066398/document.

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En raison de leur capacité à intervenir dans les processus rédox, les ligands non-innocents ont depuis longtemps suscité un intérêt chez les spectroscopistes, mais leur potentiel en catalyse n'a été que récemment considéré. Le comportement non-innocent des ligands iminosemiquinonate et de leurs dérivés est bien établi et maîtrisé, et, associés à différents métaux, ces ligands ont démontré leur efficacité dans diverses applications synthétiques, telles que les oxydations et les réactions de couplage. Ce travail de thèse a pour objectif de développer des réactivités induites par des complexes de

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12

Jin, Guanghua. "Coordination chemistry and catalysis at iron : from non-innocent ligands to CO2 transformation." Thesis, Toulouse 3, 2015. http://www.theses.fr/2015TOU30155/document.

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L'utilisation du fer en chimie de coordination et en catalyse suscite un intérêt croissant de par son abondance et sa faible toxicité. Dans le premier chapitre, une étude bibliographique présente deux domaines d'applications du fer : i) l'utilisation de complexes de fer comportant des ligands " non innocent " pour différentes applications en catalyse, et ii) l'utilisation de complexes de fer pour des transformations stœchiométriques et catalytiques du CO2. Dans le chapitre 2, la synthèse et la caractérisation de complexes de fer portant un ligand coopératif non-innocent sont présentées. Le com

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13

Katari, Madanakrishna. "Formation and Characterization of Reduced Metal Complexes in the Gas Phase." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLX091/document.

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La caractérisation complète d’intermédiaires réactionnels intervenants dans des procédés de catalyse homogène est une tâche ardue en raison de leur réactivité et de leur faible concentration. Ceci est particulièrement vrai pour les espèces radicalaires telles que les complexes organométalliques réduits, qui sont des intermédiaires en photocatalyse ou lorsque ces complexes possèdent des ligands non-innocents. Par conséquent, leur structure électronique est encore mal comprise, sachant que l'électron ajouté peut être situé sur différents sites de la molécule.Dans ce contexte, nous avons développ

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14

Mondal, Sudipta [Verfasser], and Wolfgang [Akademischer Betreuer] Kaim. "Transition metal complexes with 1,2-dicarbonylhydrazine : a study on mixed-valency and non-innocent ligand behaviour / Sudipta Mondal ; Betreuer: Wolfgang Kaim." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2018. http://d-nb.info/1169653715/34.

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15

Das, Hari Sankar [Verfasser], and Biprajit [Akademischer Betreuer] Sarkar. "Ruthenium complexes with non-innocent quinonoid, quinoline-5,8-dione and iminoquinone ligands : synthesis, structure, redox properties and electron distribution / Hari Sankar Das. Betreuer: Biprajit Sarkar." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2012. http://d-nb.info/102604331X/34.

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16

Fabre, Muriel. "Complexes dinucléaires Ruthénium-cyanamides : composés modèles pour l'étude de la communication électronique à longue distance." Phd thesis, Université Paul Sabatier - Toulouse III, 2006. http://tel.archives-ouvertes.fr/tel-00171709.

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La communication électronique dans des complexes dinucléaires du ruthénium peut être caractérisée soit par le couplage électronique Vab dans le système à valence mixte (RuII-RuIII), soit par le couplage magnétique J dans le système homovalent paramagnétique (RuIII-RuIII). L'objectif de ce travail était d'obtenir une famille de composés en faisant varier la longueur du ligand pontant et de mesurer les interactions électronique et magnétique afin d'établir une corrélation entre J et Vab.<br />Une première famille de complexes dinucléaires du ruthénium [{RuII(tpy)(acac)}2(µ-L)] (où tpy = 2,2'-6',

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17

Francisco, Thiago dos Santos. "Complexos FosfÃnicos de RutÃnio: SÃntese, CaracterizaÃÃo, ImobilizaÃÃo e Atividade CatalÃtica." Universidade Federal do CearÃ, 2015. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=16311.

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CoordenaÃÃo de AperfeÃoamento de Pessoal de NÃvel Superior<br>Os resultados apresentados neste trabalho envolvem a sÃntese de compostos de coordenaÃÃo contendo fosfinas e ligantes redox ativos (ligantes nÃo-inocentes) na esfera de coordenaÃÃo do rutÃnio. Este trabalho estÃ inserido em uma linha de pesquisa do Grupo de BioinorgÃnica que visa, como objetivo final, a aplicaÃÃo dos compostos isolados na catÃlise de reaÃÃes de hidrogenaÃÃo. Durante o desenvolvimento das atividades de doutorado, perÃodo de marÃo de 2010 a janeiro de 2015, foram sintetizados seis (06) compostos inÃditos na literatura

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18

ZHU, DI. "Non-innocence of the diiminepyridine ligand in its cobalt complexes." 2011. http://hdl.handle.net/1993/4769.

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This thesis focuses on the properties of the diiminepyridine (DIP) ligand and its transition metal complexes, especially cobalt complexes. Existing and new X-ray structures of five-coordinate DIP Fe and Co dihalide complexes have been analyzed using the two-angle criterion ω. Substituent effects (less than 6 kcal/mol) and metal effects (mostly less than 6 kcal/mol) on structure distortion have been explored by density functional theory (DFT). The small energy barrier indicated easy distortion of the coordination geometries. The same strategy was also applied to the analysis of iron dialkyl

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19

Moscattini, Joshua. "Exploiting the Non-innocent Ligand Reactivity of Metal Bis-dithiolenes: Towards the Catalytic Synthesis of Chiral Thioether Ligands and other Synthetic Targets." Thesis, 2012. http://hdl.handle.net/1807/33457.

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Asymmetric catalysis is one of the most effective ways to control a target molecule’s stereochemistry. Through the development of a wide variety of chiral transition metal complexes, synthetic chemists are given the tools they need to synthesize the desired enantiomer of numerous compounds. This work focuses on exploiting the non-innocent ligand reactivity of metal bis-dithiolenes with multiple conjugated π systems in order to synthesize chiral ligands. Recent work has shown that platinum bis-dithiolene reacts with dienes stereoselectively to form a racemic mix of C2 -chiral thioether ligands.

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20

SHU-YI, CHU, and 朱書儀. "Theoretical Pourbiax Diagrams of Ru-Polypyridyl Complexes: A Innocent and Non-innocent Ligand Comparison for Water Oxidation Catalysis." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/28930637507261564334.

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碩士<br>國立臺灣師範大學<br>化學系<br>102<br>Water oxidation is a key half-reaction (2H2O → O2 + 4H+ + 4e−) employed in solar-fuel-based energy conversion, and it is dominated by proton-coupled electron transfer (PCET), given its multi-electron, multi-proton character. Mononuclear Ru-based water oxidation catalysts (WOCs) are a valuable class of WOCs used for water splitting. Noninnocent ligands (NILs) have three oxidation states, NILOx, NIL•, and NILRed, that have an electron redox transformation in common. NILs can help disperse the electron density at the metal center and keep the metal center in low ox

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21

"Synthesis and Reactivity of Group 9 Complexes Featuring Redox Non-Innocent Ligands." Master's thesis, 2016. http://hdl.handle.net/2286/R.I.38406.

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abstract: The addition of aminoalkyl-substituted 2,6-bis(imino)pyridine (or pyridine diimine, PDI) ligands to [(COD)RhCl]2 (COD = 1,5-cyclooctadiene) resulted in the formation of rhodium monochloride complexes with the general formula (NPDI)RhCl (NPDI = iPr2NEtPDI or Me2NPrPDI). The investigation of (iPr2NEtPDI)RhCl and (Me2NPrPDI)RhCl by single crystal X-ray diffraction verified the absence of amine arm coordination and a pseudo square planar geometry about rhodium. Replacement of the chloride ligand with an outer-sphere anion was achieved by adding AgBF4 directly to (iPr2NEtPDI)RhCl to form

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22

Yang, Yu-Wei, and 楊于薇. "Theoretical Studies of the difference between Ruthenium complex with Non-Innocent and Innocent Ligands for Water Oxidation Reaction." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/50887824410066474604.

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碩士<br>國立臺灣師範大學<br>化學系<br>100<br>The non-innocent ligand (NIL) has been reported to play an important role on molecular water-oxidation catalysis. The first NIL catalyst was introduced by Tanaka and coworkers where the electrochemical property of quinone in [Ru2(OH)2(3,6-tBu2Q)2(btpyan)]2+ (tBu2Q, 3,6-di-tert-butyl-1,2-benzoquinone; btpyan, 1,8-bis(2,2′:6′,2′′-terpyridyl)anthracene) is believed to be responsible for its novel catalytic ability. The current study focuses on a systematic comparison between two Ruthenium complexes with Non-innocent ligand(NIL) and innocent ligand from the perspect

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23

Horak, Kyle Tadashi. "The Design and Synthesis of Transition Metal Complexes Supported by Non-innocent Ligand Scaffolds for Small Molecule Activation." Thesis, 2016. https://thesis.library.caltech.edu/9560/108/Intro.pdf.

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<p>This dissertation focuses on the incorporation of non-innocent or multifunctional moieties into different ligand scaffolds to support one or multiple metal centers in close proximity. Chapter 2 focuses on the initial efforts to synthesize hetero- or homometallic tri- or dinuclear metal carbonyl complexes supported by para-terphenyl diphosphine ligands. A series of [M<sub>2</sub>M’(CO)<sub>4</sub>]-type clusters (M = Ni, Pd; M’ = Fe, Co) could be accessed and used to relate the metal composition to the properties of the complexes. During these studies it was also found that non-innocent beha

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24

"Biomimetic Models of [FeFe]-hydrogenase: Utilization of peptides and redox non-innocent ligands in synthetic catalysts." Doctoral diss., 2013. http://hdl.handle.net/2286/R.I.18826.

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abstract: [FeFe]-hydrogenases are enzymes for the reduction of protons to hydrogen. They rely on only the earth abundant first-row transition metal iron at their active site (H cluster). In recent years, a multitude of diiron mimics of hydrogenases have been synthesized, but none of them catalyzes hydrogen production with the same exquisite combination of high turnover frequency and low activation energy as the enzymes. Generally, model complexes fail to include one or both of two features essential to the natural enzyme: an intricate array of outer coordination sphere contacts that constrain

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25

Zhang, Cai-Xing, та 張財興. "Exploring the non-innocent Character of Electron Rich π-extended 8-oxyquinolate Ligands in Ruthenium(II) Bipyridyl Complexes". Thesis, 2014. http://ndltd.ncl.edu.tw/handle/333a4r.

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碩士<br>國立臺灣師範大學<br>化學系<br>104<br>The enhancement of the photoelectric conversion efficiency of dye-sensitized solar cells(DSSC) has been a consistently significant topic to scientist. In this work, we analyze the electron transfer of [Ru(dcbpy)2(8-OQN)]+ (dcbpy=4,4'-dicarboxy-2,2' bipyridyl, and 8-OQN=8-oxyquinolate) with I- , Simulating the reaction mechanism of dye and redox couple (I- /I3- ). Also, we change the complex to [Ru(dcbpy)2(5,7-di-X-8-OQN)]+ (X=H, F, Cl, Br, I, Me) to study the difference of the barrier of electron transfer with different electron push-pull functionalities.

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26

Presow, Shaun Richard [Verfasser]. "An experimental study of five-coordinate iron complexes containing non-innocent aminobenzenethiol based ligands / presented by Shaun Richard Presow." 2008. http://d-nb.info/99080318X/34.

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"Development of Homogeneous Manganese and Iron Catalysts for Organic Transformations and Renewable Fuel Production." Doctoral diss., 2016. http://hdl.handle.net/2286/R.I.39403.

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abstract: The late first row transition metals, being inexpensive and environmentally benign, have become very attractive for sustainable catalyst development. However, to overcome the detrimental one electron redox processes exhibited by these metals, the employment of redox non-innocent chelates turned out to be very useful. The Trovitch group has designed a series of pentadentate bis(imino)pyridine ligands (pyridine diimine, PDI) that are capable of binding the metal center beyond their 3-N,N,N core and also possess coordination flexibility. My research is focused on developing PDI-support

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28

Khusniyarov, Marat M. [Verfasser]. "Metal complexes with non-innocent N-donor ligands : molecular and electronic structures, reactivity, and application / vorgelegt von Marat M. Khusniyarov." 2006. http://d-nb.info/98145528X/34.

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Das, Atanu Kumar [Verfasser]. "Structural, electron transfer and spectroscopic studies of transition metal complexes with redox-active non-innocent ligands / vorgelegt von Atanu Kumar Das." 2009. http://d-nb.info/995067260/34.

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Chun-KangLo and 羅淳剛. "Studies of high-valent vanadium complexes binding with non-innocent thiolato ligands / the cleavage of strong C-O and O-H bonds with assistance of hydrogen bonds." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/02628105393853398997.

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碩士<br>國立成功大學<br>化學系<br>103<br>In our effort to understanding high-valent vanadium sulfur chemistry, two tris(thiolato)phosphine ligands, [PS3”]H3 and [PS3*]H3 has been untilized to interact with high-valent vanadium species.([PS3”]H3=[P(C6H3-3-Me3Si-2-S)3]3-. [PS3*]H3=[P(C6H3-3-Ph-2-S)3]3-). At this work, several five vanadium-thiolate complexes have been obtained and characterized. They are [V(PS3”)2][NEt4] (1a), [V(PS3*)2][NPr4] (1b),[VIV(PS2”SH)(PS3”)][PPh4] (2a), [VIV(PS3*)(PS2*SH)][NPent4] (2b), and [VIV(PS3*)2] [(NPr4)2] (3). The reactivity of them with air has been explored. The eviden

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