Дисертації з теми "Metal thiolates"
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Lawlor, Fiona Jayne. "Synthetic and structural studies involving the elements boron, antimony and bismuth." Thesis, University of Newcastle Upon Tyne, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320603.
Повний текст джерелаWatson, Charles Martin. "Surface Interactions of Mercury on Gold Foil Electrodes in Electrodeposition and Stripping and ; An Investigation of Free Thiolate Ions from Metal-Thiolate Chalcogenides." Fogler Library, University of Maine, 2003. http://www.library.umaine.edu/theses/pdf/WatsonCM2003.pdf.
Повний текст джерелаWilker, Jonathan J. (Jonathan James). "Alkyl transfer to metal thiolates and models for the repair of DNA aklylation damage." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/42600.
Повний текст джерелаShahin, Zahraa. "Au25(SR)18 gold thiolate clusters and metal organic frameworks in catalytic transformations." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSE1195/document.
Повний текст джерелаThis research project reports the synthesis and characterization of new composite materials based on Au25(SR)18 thiolate gold nanoclusters (tGNCs), supported over a range of metal organic frameworks (MOFs), and ZrO2. The synthesized composite materials were tested for catalytic transformations of various substrates. tGNCs are atomically well defined materials known to be active in oxidation reactions. MOFs nanoparticles are materials suitable for high dispersion of tGNCs. Some MOFs are known to have acidity and can be active as catalysts. Among them, MIL-101 (Cr), UiO-66 (Zr) and ZIF-8 (Zn) were chosen due to their acidic and/or thermal stability properties. The synergy between tGNCs and MOFs has been tested through catalytic conversions of different substrates like glucose, fructose, benzylalcohol and furfural, involving steps requiring acidic and oxidative features. Globally, no impact of the presence of Au clusters was observed, and the composite materials showed the same catalytic trends as those obtained with the MOFs alone. This is mainly due to the not sufficient thermal stability of the MOFs that prevents efficient calcination of the tGNCs. In contrast, when deposited on ZrO2 it was possible to calcine Au25(SG)18 nanoclusters at different temperatures to study the ligand and particle size effects in liquid phase oxidation reactions. For example, the calcination temperature had a significant impact on the catalytic behaviour of this composite materials, which showed good activity for the oxidation of benzyl alcohol into benzaldehyde in toluene under mild conditions, and of furfural oxidative esterification into methyl-2-furoate
Abrahams, I. L. "Investigation of metallothioneins and related metal thiolate clusters." Thesis, University of Manchester, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.374556.
Повний текст джерелаMarsh, Patrica Ann. "Metal complexes as precursors for film deposition processes." Thesis, Open University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.262973.
Повний текст джерелаZheng, Yifan. "Plantimum group metals and iron complexes of functionalised aromatic thiolates." Thesis, University of Essex, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333549.
Повний текст джерелаLu, Canzhong. "Novel transition metal complexes of sterically hindered silyl thiolate ligands." Thesis, University of Essex, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.307857.
Повний текст джерелаSpence, Malcolm Andrew. "Organometallic thiolate complexes of the early transition metals." Thesis, Heriot-Watt University, 1998. http://hdl.handle.net/10399/1117.
Повний текст джерелаCranswick, Matthew A. "Gas-phase Photoelectron Spectroscopy and Computational Studies of Metal-thiolate Interactions: Implications to Biological Electron Transfer." Diss., The University of Arizona, 2008. http://hdl.handle.net/10150/195569.
Повний текст джерелаStenson, Philip A. "Transition metal thiolate complexes : modelling the active sites of sulfur-ligated metalloenzymes." Thesis, University of Nottingham, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.430766.
Повний текст джерелаBritton, A. M. "Complexes of heterocyclic thiones and thiolates with nickel (II) and the platinum metals." Thesis, University of Newcastle Upon Tyne, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383557.
Повний текст джерелаTennyson, Andrew Gregory. "The detection of nitric oxide and its reactivity with transition metal thiolate complexes." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/43767.
Повний текст джерелаVita.
Includes bibliographical references.
Nitric oxide (NO) is a molecule that is essential for life and regulates both beneficial and harmful processes. Because this gaseous radical influences many aspects of health and disease, we wish to explore the relationship between NO and physiology/pathophysiology. To this end, we seek to create tools for the fluorescent imaging of NO in vivo. We have adapted an existing small molecule-based sensor for more biologically relevant applications by including it within a polymeric film. We have also developed turn-on fluorescent sensors for NO based on conjugated polymers, which demonstrated good selectivity and sensitivity for this analyte. In addition, we have prepared a related sensor that will detect nitroxyl (HNO) but not NO. These systems demonstrate the versatility and value of the conjugated polymer scaffold for sensing applications. Many targets of the diatomic radical NO contain redox active units, such as transition metals or thiolate ligands. To gain insight into how NO might regulate biological processes by interacting with these redox active species, we have initiated a fundamental study of the reactivity of NO with transition metal thiolate model complexes. Our explorations in this field have yielded unique nickel and cobalt nitrosyl species with atypical electronic and structural parameters. These studies have suggested intermediates for the more biologically relevant iron nitrosyl complexes that have not yet been observed may exist. Furthermore, the NO chemistry of these small molecule nickel and cobalt thiolate complexes may guide future biological investigations into the regulation of nickel and cobalt metalloproteins by NO.
Andrew Gregory Tennyson.
Ph.D.
Famengo, Alessia. "Dithiolene and thiolate transition metal complexes: towards an exploration of their multi-functional properties." Doctoral thesis, Università degli studi di Padova, 2011. http://hdl.handle.net/11577/3423332.
Повний текст джерелаQuesto lavoro di dottorato ha riguardato la sintesi e la caratterizzazione di complessi di metalli di transizione con leganti donatori allo zolfo. In particolare sono stati considerati i leganti 1,2 ditiolato e un legante tipo tiol-carbossilato, l’acido 2-mercaptonicotinico. Lo zolfo presenta una variabilità maggiore di stati di ossidazione rispetto all’ossigeno e a questo si riconduce il particolare comportamento redox dei complessi con legami M-S. Per questo motivo la sintesi di complessi implicanti il legame metallo-zolfo è un’area di ricerca attiva soprattutto per quanto riguarda la progettazione di materiali con proprietà di conduzione, ottiche o magnetiche. In questo contesto sono stati considerati i complessi dei metalli di transizione con i leganti 1,2 ditiolato, altresi detti metallo bis-ditioleni. Nei metallo bis-ditioleni la variabilità degli stati di ossidazione del complesso senza grandi variazioni della geometria di coordinazione li rende adatti per la sintesi di materiali molecolari. In particolare, una via sintetica per l’ottenimento di tali materiali consiste nell’organizzare questi complessi via coordinazione ad un altro centro metallico, in maniera da ottenere composti a più alta nuclearità. Soprattutto per quanto riguarda il magnetismo molecolare, vi è la necessita di organizzare nella stessa molecola più centri paramagnetici. In questo lavoro di tesi, inizialmente dithioleni paramagnetici “classici” come [Cu(mnt)2]2- ,[Cu(tfadt)2]2-and [Ni(dmid)2].-, contenenti gruppi funzionali potenzialmente coordinanti sono stati impiegati come metallo-leganti verso complessi paramagnetici di Mn(III) o a valenza mista Mn(II)/Mn(III). Durante gli esperimenti condotti, è risaltata la reattività in soluzione dei metallo bis-ditioleni verso lo scambio di leganti che non ha condotto alla formazione del complesso polunucleare sperato, sebbene siano stati isolati composti potenzialmente interessanti. Alla luce di tutto cio, è stata intrapresa la sintesi di nuovi leganti 1,2 ditiolato opportunamente funzionalizzati con gruppi coordinanti quali gli eteri corona. La versatilità dei ditioleni verso la funzionalizzazione ha permesso di realizzare una serie di leganti con diverse dimensioni del macrociclo, in modo da poter modulare la selettività verso metalli di transizione ma anche verso ioni di lantanidi trivalenti. Sono stati sintetizzati a partire da questi leganti i complessi ditioleni di nickel, isolandoli in forma di anioni e aventi spin S=1/2. Sono state ottenuti complessi polimetallici Ni-Ni e Ni-Na. Inoltre è stato ottenuto un complesso bimetallico Ni-Ni. Tutti i complessi sono stati caratterizzati chimicamente. Inoltre, le proprietà magnetiche sono state indagate tramite misure di suscettività magnetica in funzione della temperatura, rivelando per il complesso polimetallico Ni-Ni una forte interazione fra le unità ditiolene costituenti il complesso. Il legante tiol-carbossilato acido 2- mercaptonicotinico è stato considerato per la sua versatilità alla coordinazione. In condizioni idrotermali e in presenza di Zn(II) e acido 2-mercaptonicotinico, è stato ottenuto un polimero di coordinazione dove il legante mercaptonicotinato funge da chelante S,O e lega a ponte monoatomico i vicini centri metallici. La stessa topologia non è stata ottenuta con il Ni(II). Cambiando le condizioni di reazione, finora solo il complesso monometallico Ni(II) bis-mercaptonicotinato è stato ottenuto. Le proprietà elettroniche correlate alla situazione di coordinazione S-Zn-O del polimero di coordinazione di Zn(II) sono state investigate per mezzo di calcoli teorici e misure sperimentali.
Veselska, Oleksandra. "Études Structurales et Photophysiques de Polymères de Coordination de Thiolates de Métaux Monétaires." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSE1197/document.
Повний текст джерелаThe coordination polymers (CPs) based on thiolates of coinage metals are well known for their luminescence properties. However, their structures stayed underexplored. In the thesis we present a pioneering study targeting the understanding of the structure formation and the ‘structure-properties’ correlation for neutral homoleptic CPs, [M(SR)]n, M = Cu(I), Ag(I), Au(I). The compounds with thiophenolate derivatives studied in the work, illustrate how the use of some functionalized organic ligands leads to the formation of extended 2D networks or 1D columns by addition of some steric hindrance. The first comparative structural study of amorphous thiolated CPs was performed by PDF analysis. The photophysical studies showed the diversity of luminescent properties of the CPs based on thiolates of coinage metals. Double or multiple emission peaks, high quantum yield of orange-toinfrared emitters, significant lifetime variation with temperature… all of these intrinsic properties reveal the high potential of these compounds for diverse optical applications
Law, Yuen-chi, and 羅婉芝. "Platinum-ligand PI bonding interactions: the ligand-to-ligand charge transfer transitions and supramolecularchemistry of platinum(II) acetylide and thiolate complexes." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B38746827.
Повний текст джерелаLaw, Yuen-chi. "Platinum-ligand PI bonding interactions the ligand-to-ligand charge transfer transitions and supramolecular chemistry of platinum(II) acetylide and thiolate complexes /." Click to view the E-thesis via HKUTO, 2006. http://sunzi.lib.hku.hk/hkuto/record/B38746827.
Повний текст джерелаHarrop, Todd Christopher. "Metalloenzymes with carboxamido n-metal and thiolato s-metal bonds : modeling the active sites of nitrile hydratase and acetyl coenzyme a synthase/carbon monoxide dehydrogenase /." Diss., Digital Dissertations Database. Restricted to UC campuses, 2004. http://uclibs.org/PID/11984.
Повний текст джерелаHall, Nikita. "Synthèse, caractérisation et étude de la réactivité de complexes métalliques bio-inspirés à liaison Métal-Thiol." Thesis, Grenoble, 2013. http://www.theses.fr/2013GRENV073/document.
Повний текст джерелаThis thesis presents the synthesis and characterisation of bio-inspired molecular complexescontaining metal alkyl thiolate bonds with the goal of modelling metalloenzymes. In particular,we have attempted to improve our knowledge on the role that the bound alkyl thiolate plays inmetalloenzymes, including, structural features, electronic properties and also reactivity of theassociated active sites. The bound alkyl thiolate undergoes two main reactions inmetalloenzymes; S-alkylation and S-oxygenation. From the isolation and characterisation of thecorresponding active sites, it can be seen that the reactivity of the bound alkyl thiolate dependsgreatly on the metallic ion. In this context, different Mn+-thiolate complexes have beensynthesized (VIII, VIV, VV, NiII, NiIII, CoII and CoIII), with either a tetradentate LN2S2 or a tridentateLNS2 ligand. Both ligands consist of aromatic nitrogen (bipyridine or pyridine) donor atom(s)and also two bulky S-thiolate donor atoms.We have shown that the CoII ion is a suitable structural substitute for Zn-containingmetalloenzymes, however, it is inappropriate as a functional substitute in the particular case ofS-alkylation. Furthermore, we have been able to structurally model the activation step of cobaltnitrile hydratase, with the incorporation of three oxygen atoms on a CoIII bis alkyl thiolatecomplex evidencing dissymmetrical S-oxygenation. In contrast, using vanadium and nickel,metal-peroxo species have been generated, without intramolecular S-oxygenation. This researchhas led to some of the first examples of active oxygen nickel and vanadium complexes usingalkyl thiolate ligands.We have also attempted to model very difficult reactions carried out by sulfur richmetalloenzymes, especially the activation and reduction of dinitrogen realised by nitrogenases.To model this enzyme, a VIII alkyl thiolate complex has been synthesised and its reactivityinvestigated. Preliminary results suggest that the reduced VII species has the ability to activateand reduce hydrazine into ammonia, which is proposed to be the final stage of dinitrogenreduction
Gomes, de Lima Bernardes Miriam. "Réactivité de complexes organométalliques mono- et dinucléaires : synthèse de thiolato-composés du molybdène, du tungstène et du cobalt : étude de la formation de liaisons c-c dans la sphère de coordination du métal." Brest, 1986. http://www.theses.fr/1986BRES2008.
Повний текст джерелаPETIT, JEAN-FRANCOIS. "Les squarates de lanthanoides : synthese, structure, comportement thermique et proprietes optiques, synthese et structure de dithiosquarates bimetalliques de nickel (ii) et de cerium (iii)." Toulouse 3, 1988. http://www.theses.fr/1988TOU30133.
Повний текст джерелаGOMES, DE LIMA LUIS CARLOS. "Reactions d'alcynes cyanes (monocyanoacethylene et dicyanoacethylene), vis-a-vis de complexes organometalliques du fer, du cobalt, du molybdene et du tungstene." Brest, 1986. http://www.theses.fr/1986BRES2009.
Повний текст джерелаFaulmann, Christophe. "Conducteurs derives de metaux de transition : complexes moleculaires, polymeres, oxydes de cuivre." Toulouse 3, 1988. http://www.theses.fr/1988TOU30160.
Повний текст джерелаWu, Wan-Min, and 吳婉旻. "Crystal Engineering and Spectroscopic Studies of Metal-Containing Cyclophanes [Metal=Mn(I), Re(I)] & Au(I) Thiolates." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/12503094551506485378.
Повний текст джерела國立中正大學
化學研究所
91
The research focus in this thesis is classified into three parts. The first part includes the synthesis of pyridyl-amide ligands by one-pot reaction with high yields. Second part is to utilize a series of the designed pyridyl amides (L1-L6) as bridging ligands for the construction of molecular squares with Re(I) or Mn(I) ions as corners. The hydrogen-bonding functions of pyridyl amides may be anticipated to contribute in the formation of supramolecular nanotubes as functional materials by self assembly. The spectroscopic and photophysical properties were also investigated. The lower energy of 3d orbital for Mn(I) ion than 5d orbital for Re(I) as well as low-energy -* orbitals of pyridyl amides led to the red shift of charge-transfer band for Re(I)-based squares compared to Mn(I)-based squares and also a low-energy emission for the Re(I) ones. The porous nature or luminescence properties of the compounds studied here maybe make them potential candidates in chemical sensing. Third part is to synthesize the luminescent Au(I) compounds with 2-amino- 5-mercapto-1,3,4-thiadiazolate (SSNH2) and 6-amino-2-mercapto- benzothiazolate (SSCNH2) ligands and to study the structural chemistry. From the X-ray structural data, [Au(SSNH2)P(CH2CH2CN)] forms one-dimensional hydrogen-bonded framework, but [Au(SSCNH2) P(CH2CH2CN)] forms a two-dimensional framework owing to the additional involvement of the CN moiety in hydrogen bonding. The solid-state luminescence is also studied.
Almaraz, Elky. "The Interactions of Zinc Thiolate Complexes and Exogenous Metal Species: Investigations of Thiolate Bridging and Metal Exchange." 2009. http://hdl.handle.net/1969.1/ETD-TAMU-2009-05-536.
Повний текст джерелаSavelieff, Masha Georges. "Metal thiolate and metal sulfide clusters in proteins /." 2008. 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:3337915.
Повний текст джерелаSource: Dissertation Abstracts International, Volume: 69-11, Section: B, page: 6795. Adviser: Yi Lu. Includes bibliographical references. Available on microfilm from Pro Quest Information and Learning.
Abdou, Hanan E. "Synthesis and reactivity of gold (I) thiolate cluster complexes /." 2001. http://www.library.umaine.edu/theses/theses.asp?Cmd=abstract&ID=CHY2001-001.
Повний текст джерелаYu-SenChen and 陳郁森. "The metal-centered and Ligand-based Reactivity of Vanadiumn thiolate Complexes." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/02313248308005398987.
Повний текст джерела國立成功大學
化學系碩博士班
100
At this work, several vanadium-thiolate complexes have been obtained and characterized. They are [VIII(PS2”SH)2][PPh4] (1), [VIV(PS3”)(PS2”SH)][PPh4] (2) and [V(PS3”)2][NEt4] (3). (PS2”SH = [P(C6H3-3-Me3Si-2-S)2 (C6H3-3-Me3Si-2-SH)]2-. PS3” = [P(C6H3-3-Me3Si-2-S)3]3-). The reactivity of them with air/dioxygen, CH2Cl2 and CHCl3 have also been explored. The evidence were supported by several physical methods, including X-ray crystallography, UV-vis, NMR spectroscopies, and ESI-MS studies. Complexes 1, 2 and 3 exhibited several types of reactivity toward dioxygen. They include metal-center oxidation, thiyl-radical formation, and oxygenation on metal bound thiolate. The hexa-coordinated [VIII(PS2”SH)2][PPh4] (1) reacted with dioxygen to a hepta-coordinated [VIV(PS3”)(PS2”SH)][PPh4] (2). Complex 2 was further oxidized to yield an octa-coordinated [V(PS3”)2][NEt4] (3), a species with charge delocalization character between vanadium and sulfur centers. During the oxidation process, the corresponding vanadium sulfenate/sulfinate species of 2 and 3 were also observed. Complex 3, a species with resonance forms between V(V)-thiolate and V(IV)-thiyl radical, also reacted with H2O and form 2 by homolytic cleavage of the O-H bond in water. In addition, complex 3 also reacted with CH3OH via homolytic cleavage of the O-H bond and C-O bond in methanol. Consequently, it led to the formation of complex 2 and [VIV(PS3”)(PS2”SCH3)]- (4a), a bound thiolate was protonated and methylated to form an unbound thiol (in 2) and methylether (in 4a), respectively. Finally, 3 can undergo C-Cl bond activation toward CH2Cl2 to form [VIII(PS3”)Cl][PPh4] (5) and [VIV((PS3”)2CH2)] (6), a VIII-Cl species and a VIV species containing two PS3” with CH2 linkage between two thiolates. The similar reactivity toward CHCl3 was also observed. Complexes 1 and 2 can undergo C-Cl bond activation toward CH2Cl2 to produce 5 and 6. In contrast to the reactivity of 3 with CH2Cl2, a homolytic cleavage of C-Cl bond through a radical mechanism, the reactivity of 1 and 2 with CH2Cl2 might undergo through nucleophilic attack of the lone paired electrons on bound sulfur. The reaction with CHCl3 also showed similar reactivity as CH2Cl2.
Fiedler, Adam T. "Spectroscopic and computational studies of metal-thiolate interactions in metalloenzymes and related model complexes." 2006. http://www.library.wisc.edu/databases/connect/dissertations.html.
Повний текст джерела