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Dissertations / Theses on the topic 'Ruthenium clusters'

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Published: 4 June 2021

Last updated: 26 July 2025

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1

Dutton, Tom. "Ruthenium carbido clusters." Thesis, University of Cambridge, 1989. https://www.repository.cam.ac.uk/handle/1810/290027.

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2

Dyson, Paul J. "Arene clusters of ruthenium." Thesis, University of Edinburgh, 1993. http://hdl.handle.net/1842/13755.

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The thesis commences with a general introduction outlining the attraction of arene clusters and develops the area pertinent to the research described thereafter. An account of the synthesis, characterisation and reactivity of a series of cyclohexadiene and benzene clusters derived from the pentanuclear cluster Ru<SUB>5</SUB>C(CO)<SUB>15</SUB> is given. Encompassed within this work are investigations concerned with benzene migration and mechanisms by which 1,4-dienes isomerise to 1,3-dienes. A new stepwise route to the <I>bis</I>-benzene cluster Ru<SUB>6</SUB>C(CO)<SUB>11</SUB>(<I>η<SUP>6</SUP>

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3

Stroud, Philip Michael. "Ligand stabilised heterometallic clusters of ruthenium." Thesis, University of Southampton, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.277926.

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4

Massey, Anju Deepali. "Some chemistry of ruthenium and osmium clusters." Thesis, University of Cambridge, 1990. https://www.repository.cam.ac.uk/handle/1810/273135.

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5

Draper, Sylvia Mary. "Boron containing iron and ruthenium butterfly clusters." Thesis, University of Cambridge, 1992. https://www.repository.cam.ac.uk/handle/1810/272456.

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6

Magee, Samantha. "Magnetic properties of heterometallic ruthenium-based clusters." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/magnetic-properties-of-heterometallic-rutheniumbased-clusters(2597bec9-8e6c-4c56-861e-71a62ee83780).html.

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This thesis describes the synthesis of ruthenium based molecular clusters and their characterisation. Chapter 2 introduces the concept that the very large zero-field splitting (D = 2.9 cm–1) in the S = 5/2 ground state of [Ru2Mn(μ3-O)(tBuCO2)6(py)3] can be modelled by antisymmetric exchange effects. This is supported by measurement of the single ion D values from the Fe2Mn analogue. The same model is applied to the Ru2Ni analogue to describe the zero-field splitting in the S = 1 ground state, (DGS = +8.0 cm–1 from DNi = -4.0 cm–1) in Chapter 3.Chapters 3 and 4 give the full characterisation of

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7

Clarke, L. P. "The chemistry of osmium and ruthenium diyne clusters." Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.597722.

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The work describes in this dissertation concerns the syntheses, reactivities and characterisation of some triosmium and tetraruthenium carbonyl clusters with conjugatively unsaturated diynes. While the alkyne chemistry of osmium and ruthenium carbonyl clusters has been explored extensively over the past 20 years, the analogous chemistry of diynes has been less thoroughly explored. Chapter 1 gives a general introduction to the area of carbonyl clusters and their alkyne derivatives in chapter 1, with an emphasis on the group 8 transition metals. Recent and related diyne work is also discussed. T

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8

Landen, Torquil George Spencer. "Synthesis and characterisation of heterometallic ruthenium carbonyl clusters." Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.627314.

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9

Morewood, Catherine Alexandra. "π-complexes of osmium and ruthenium organometallic clusters". Thesis, University of Cambridge, 1995. https://www.repository.cam.ac.uk/handle/1810/272792.

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10

Beswick, Michael Anthony. "The synthesis of high nuclearity ruthenium carbonyl clusters." Thesis, University of Cambridge, 1993. https://www.repository.cam.ac.uk/handle/1810/272574.

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11

Lugan, Noël. "Clusters du ruthenium a ligands assembleurs : stabilite, reactivite." Toulouse 3, 1987. http://www.theses.fr/1987TOU30156.

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Etude de la reactivite d'agregats derives de ru::(3)(co)::(12) stabilises par des coordinats polydentes phosphores et/ou azotes, en vue d'application en catalyse homogene. Les coordinats assembleurs sont appm et diphenylpyridylphosphine. On etudie egalement la reactivite des complexes a coordinats acyle ru::(3)(co)::(9)(c(o) (c::(6)h::(5))) (p(c::(6)h::(5)) (c::(5)h::(4)n))

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12

Mace, J. M. "Nitrosyl, nitrido and sulphido clusters of ruthenium and osmium." Thesis, University of Cambridge, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.354344.

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13

Matters, Justin Mark. "Some chemistry of ruthenium carbonyl clusters with arene ligands." Thesis, University of Cambridge, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.624659.

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14

Kandala, Srikanth. "Synthesis and characterization of diphosphine ligand substituted osmium and ruthenium clusters." Thesis, University of North Texas, 2007. https://digital.library.unt.edu/ark:/67531/metadc3955/.

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The kinetics for the bridge-to-chelate isomerization of the dppe ligand in H4Ru4(CO)10(dppe) have been investigated by UV-vis and NMR spectroscopies over the temperature range of 308-328 K. The isomerization of the ligand-bridged cluster 1,2-H4Ru4(CO)10(dppe) was found to be reversible by 31P NMR spectroscopy, affording a Keq = 15.7 at 323 K in favor of the chelating dppe isomer. The forward (k1) and reverse (k-1) first-order rate constants for the reaction have been measured in different solvents and in the presence of ligand trapping agents (CO and PPh3). On the basis of the activation pa

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15

Waller, Anne. "Studies on the reactivity of hexametal boride clusters." Thesis, University of Cambridge, 1995. https://www.repository.cam.ac.uk/handle/1810/271995.

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16

Shay, Timothy Brian. "Experimental and theoretical investigations of ruthenium clusters with inorganic oxides /." The Ohio State University, 1992. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487760357820556.

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17

Dovidauskas, Sergio. "Química supramolecular de porfirino-clusters." Universidade de São Paulo, 2001. http://www.teses.usp.br/teses/disponiveis/46/46134/tde-30112018-111457/.

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Três novas supermoléculas, aqui designadas por ZnTCP4+, MnTCP5+ e CoTCP5+, foram obtidas pela coordenação de quatro acetatos trinucleares assimétricos de rutênio, [Ru3O(CH3CO2)6(py)2(CH3OH)]+, aos resíduos piridínicos de meso-tetra(4-piridil)porfirinato de ZnII, MnIII e CoIII, respectivamente (ZnTPyP, MnTPyP e CoTPyP). A caracterização destas supermoléculas foi efetuada por espectroscopia de ressonância magnética nuclear e espectroscopia eletrônica. O comportamento eletroquímico foi investigado por voltametria cíclica e espectroeletroquímica. Os efeitos dos acetatos trinucleares periféricos so

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18

劉思慧 and Sze-wai Cindy Lau. "The chemistry of polynuclear ruthenium carbonyl clusters containing functionalised alkyne ligands." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1999. http://hub.hku.hk/bib/B31238786.

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19

何毅雯 and Ngai-man Emmie Ho. "The chemistry of ruthenium carbonyl clusters containing nitrene and nitrido ligands." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2000. http://hub.hku.hk/bib/B3124029X.

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20

Stchedroff, Marc. "Studies on ruthenium and osmium clusters containing phosphorus and nitrogen compounds." Thesis, University College London (University of London), 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.311947.

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21

Pearson, Ruth Hazel Hunter. "Studies of ruthenium and osmium carbonyl clusters with selected organic ligands." Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.627331.

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22

Martin, Caroline M. "Studies of ruthenium and osmium carbonyl clusters with unsaturated cyclic hydrocarbons." Thesis, University of Edinburgh, 1995. http://hdl.handle.net/1842/12583.

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Chapter one contains a brief summary of the cluster-surface analogy, with a structural comparison between metal clusters and the chemisorbed state. Particular emphasis is directed towards the adsorption sites adopted by benzene on the metal surface, and the analogous coordination modes found in cluster compounds. Chapter two describes the synthesis and characterisation of a number of benzene and cyclic C<SUB>6</SUB> alkene containing clusters based on an osmium tetrahedral framework, in which the chemistry is dominated by C-H bond activation reactions. Chapter three deals with the analogous ru

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23

Shuchart, Chris Eric. "Preparation of heteronuclear organometallic clusters using ruthenium propargyl and allenyl complexes /." The Ohio State University, 1990. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487683401443728.

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24

Ho, Ngai-man Emmie. "The chemistry of ruthenium carbonyl clusters containing nitrene and nitrido ligands /." Hong Kong : University of Hong Kong, 2000. http://sunzi.lib.hku.hk/hkuto/record.jsp?B21982351.

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25

Lau, Sze-wai Cindy. "The chemistry of polynuclear ruthenium carbonyl clusters containing functionalised alkyne ligands /." Hong Kong : University of Hong Kong, 1999. http://sunzi.lib.hku.hk/hkuto/record.jsp?B21021442.

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26

Welch, D. A. "Synthetic and structural aspects of pentanuclear carbonyl clusters of ruthenium and osmium." Thesis, University of Cambridge, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372275.

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27

Saharan, Vijay Pal. "Some aspects of the organomettalic chemistry of osmium and ruthenium carbonyl clusters." Thesis, University of Cambridge, 1991. https://www.repository.cam.ac.uk/handle/1810/271917.

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28

Forth, Caroline Suzanne. "Studies on sulfur-capped osmium and ruthenium clusters with focus on dynamics." Thesis, University College London (University of London), 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.409663.

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29

Martinelli, Marcia. "The synthesis and properties of some organo-ruthenium and organo-osmium clusters." Thesis, University of Cambridge, 1991. https://www.repository.cam.ac.uk/handle/1810/271906.

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30

Humphrey, James Stuart. "Group 15 and alkyne derivatives of HR₄CO₁₂BH₂." Thesis, University of Cambridge, 1995. https://www.repository.cam.ac.uk/handle/1810/273012.

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31

Kandala, Srikanth Richmond Michael G. "Synthesis and characterization of diphosphine ligands and diphosphine substituted osmium and ruthenium clusters." [Denton, Tex.] : University of North Texas, 2007. http://digital.library.unt.edu/permalink/meta-dc-3955.

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32

Moule, Adrian Paul. "Synthesis and chemistry of osmium and ruthenium clusters containing a group V interstice." Thesis, University of Cambridge, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333367.

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33

Krause, Jeanette Alice. "Synthesis, reactivity and structural studies of anionic ruthenium and osmium polynuclear carbonyl clusters /." The Ohio State University, 1989. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487668215808774.

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34

Kiviaho, Jari. "Fischer-Tropsch synthesis catalysed by cobalt-rhodium and cobalt-ruthenium carbonyl clusters on silica /." Espoo : Technical Research Centre of Finland, 1996. http://www.vtt.fi/inf/pdf/publications/1996/P290.pdf.

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35

Sorrell, R. M. "The synthesis and chemistry of a series of ruthenium and osmium mixed metal clusters." Thesis, University of Cambridge, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.355893.

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36

FOMPEYRINE, LARSEN PATRICIA. "Clusters tri et tetranucleaires du ruthenium en hydrogenation catalytique d'alcenes : approches du mecanisme reactionnel." Toulouse 3, 1986. http://www.theses.fr/1986TOU30053.

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On etudie le mecanisme d'hydrogenation des olefines par le compose (mu -h)::(2)ru::(3)(mu ::(3)-o)(co)::(5)(dppm)::(2) (dppm=methylene bis-diphenylphosphine). Puis on etudie la synthese la caracterisation et l'activite catalytique de composes homologues (mu ::(3)-sulfuro) de (mu -h)::(2)ru::(3)(mu ::(3)-o)(co)::(5)(dppm)::(2)

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37

Ting, Fai Lung. "The chemistry of osmium and ruthenium carbonyl clusters with functionalized alkyne and phosphine ligands." HKBU Institutional Repository, 2001. http://repository.hkbu.edu.hk/etd_ra/296.

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38

Shen, Huafeng. "Substitution Chemistry of Ruthenium Clusters with the Diphosphine Ligands: 4,5-Bis(Diphenylphosphino)-4-Cyclo-Penten-1,3-Dione (bpcd), (Z)-Ph₂PCH=CHPP₂ and 3,4-Bis(Diphenylphosphino)-5-Methoxy-2(5H)-Furanone (bmf)." Thesis, University of North Texas, 1997. https://digital.library.unt.edu/ark:/67531/metadc935834/.

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The chemistry of transition metal clusters has been a fast developing area of organometallic research in recent years. Compared to mononuclear metal complexes, polynuclear clusters offer more opportunities to study cooperative effects and electron reservoir properties between contiguous metal centers, in addition to functioning as storehouses for the release of catalytically active small fragments capable of exhibiting heterosite subtrate activation. Theoretically, metal clusters are intermediates between mononuclear complexes and metal surfaces, i.e., they serve as a bridge between molecular

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39

Layer, Teresa. "Synthesis and characterisation of novel phosphorus and selenium substituted carbonyl clusters of ruthenium and osmium." Thesis, University of Cambridge, 1993. https://www.repository.cam.ac.uk/handle/1810/272563.

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40

Ali, Shahbano Amjad. "Ruthenium and osmium clusters containing imido and sulfido ligands and their reactions with unsaturated organic molecules." Thesis, University College London (University of London), 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.392334.

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41

Welker, Cathrin Alexandra. "Ruthenium based Fischer-Tropsch synthesis on crystallites and clusters of different sizes : from 'Nano" to "Ångstrøm"." Doctoral thesis, University of Cape Town, 2007. http://hdl.handle.net/11427/5383.

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42

Siriwardane, Upali. "Systematic syntheses of iron-triad (Fe,Ru,Os) tetranuclear clusters by redox condensation reactions of [Ru(3);CO(11)) and [Os(3);CO(11)] trinuclear carbonylates; co-crystallization of ruthenium-osmium clusters /." The Ohio State University, 1985. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487264603216477.

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43

RICHERT, THIERRY. "Resonance magnetique nucleaire du cobalt 59 et du ruthenium 99 dans des clusters tetraedriques et quelques composes modeles." Université Louis Pasteur (Strasbourg) (1971-2008), 1994. http://www.theses.fr/1994STR13144.

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Le but de cette these est de montrer l'interet que peut avoir la rmn de noyaux quadrupolaires comme le cobalt 59 et le ruthenium 99 dans l'etude de systemes tels que les clusters heterometalliques. La premiere partie de ce travail est consacree a la rmn du cobalt 59. Dans un premier temps, a l'aide des deplacements chimiques et des largeurs de raie nous etablissons des regles structurales simples. Par la suite, des mesures de relaxation nous ont permis de decrire le mouvement moleculaire en solution. Il a ainsi ete etabli que de tels systemes pouvaient etre assimiles a des spheres placees dans

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44

Mayberry, Darrell D. "Synthesis, Characterization, and Reactivity of Prochiral Ruthenium Clusters and Bimetallic Rhenium Complexes with an Unsymmetrical Diphosphine and Hard-Soft Donor Ligands." Thesis, University of North Texas, 2019. https://digital.library.unt.edu/ark:/67531/metadc1538707/.

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The reaction of [BrRe(CO)₄]₂ with 2-(diphenylphosphino)pyridine (PN) and 6-(diphenylphosphino)-2-formylpyridine (PON) was investigated. The reactions were regiospecific and exclusively produced the phosphorus-coordinated products, BrRe(CO)₄(κᵖ-PN) and BrRe(CO)₄(κᴾ-PON). The kinetics for the chelate ring closure (κᴾ→ κᴾᴺ) in BrRe(CO)₄(κᴾ-PN) were confirmed to occur by dissociative CO loss. The reaction of [BrRe(CO)₄]₂ with 2-(diphenylphosphino)pyridine (PN) was modeled computationally by DFT calculations. The preferred reaction pathway for the substitution reaction was determined to occur by di

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45

Formiga, André Luiz Barboza. "Estudo teórico e experimental de estruturas supramoleculares obtidas com clusters trinucleares de rutênio e porfirinas." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/46/46134/tde-26062007-162531/.

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A química supramolecular de porfirinas e clusters trinucleares de rutênio foi investigada sob o ponto de vista teórico-experimental. Através do desenvolvimento de uma nova metodologia baseada em ferramentas teóricas, as propriedades desses sistemas puderam ser explicadas à luz da mecânica quântica, revelando os mecanismos eletrônicos envolvidos na modificação das propriedades dos anéis porfirínicos pelos compostos de coordenação. As geometrias, a dinâmica e as estruturas eletrônicas desses sistemas foram obtidas através do desenvolvimento de novos parâmetros para campos de força empíricos, e

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46

Nunes, Genebaldo Sales. "Catálise oxidativa de clusters de rutênio e porfirinas supramoleculares." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/46/46134/tde-03072007-103646/.

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A atividade catalítica de clusters trigonais de acetato de rutênio e porfirinas supramoleculares contendo quatro unidades de clusters periféricos ou complexos de bis(bipiridina)rutênio, na oxidação de substratos orgânicos por iodosil-benzeno ou terc-butil-hidroperóxido, é abordada nesta tese. Foram feitos estudos cinéticos para elucidar o mecanismo de catálise, com especial destaque para duas espécies supramoleculares isoméricas representadas por Mn(3-TRPyP) ou Mn(4-TRPyP), nos quais os complexos de bis(bipiridina)(cloro)rutênio se coordenam à tetrapiridilporfirina através das posições meta

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47

Nikolaou, Sofia. "Desenvolvimento de sistemas polinucleares baseados em clusters trinucleares e complexos poliimínicos de rutênio: unidades de montagem em química supramolecular." Universidade de São Paulo, 2002. http://www.teses.usp.br/teses/disponiveis/46/46134/tde-03102007-100839/.

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O trabalho apresentado nesta Tese tem como objetivo a elaboração de estruturas polinucleares baseadas em clusters trinucleares de rutênio. Os oligômeros estudados são opções interessantes para o desenvolvimento futuro de dispositivos supramoleculares, em função de suas propriedades fotofísicas e eletroquímicas. Um trímero e uma série de dímeros mistos foram obtidos pela combinação do cluster [Ru3O(CH3COO)6(py)2(CH3OH)]+ com complexos [Ru(bpy)2(P)(L)]+ (P = ligante de ponte N-heterocíclico; L = P, Cl ou CN). A caracterização por RMN, voltametria cíclica e espectroeletroquímica dos dímeros onde

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48

Sorarù, Antonio. "Molecular and nanodimensional metal based systems for the therapy against neurodegenerative diseases." Doctoral thesis, Università degli studi di Padova, 2015. http://hdl.handle.net/11577/3424628.

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Reactive oxygen species (ROS) are harmful species produced during metabolic processes, such as photosynthesis and respiration, of living organism. In both case, the substrate (oxygen/water) undergoes several multi electronic reaction, during which some electrons can “escape” from the catalytic cycle and produce ROS, such as superoxide radical anion, hydrogen peroxide, hydroxyl radical and other derivatives. These species are really dangerous, since they are able to oxidize almost all cellular components. Indeed they can damage lipids, proteins, DNA, affecting cellular functions till cell deat

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49

Keep, Ann Kathleen. "Ruthenium boron cluster chemistry." Thesis, University of Cambridge, 1990. https://www.repository.cam.ac.uk/handle/1810/272941.

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50

Shephard, Douglas Stuart. "Some cluster chemistry of ruthenium." Thesis, University of Edinburgh, 1996. http://hdl.handle.net/1842/14406.

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This thesis describes research directed towards the synthesis, full chemical, spectroscopic and structural characterisation, and reactivity in selected cases of some ruthenium carbonyl clusters containing both π-donor and σ-donor ligands. Cluster nuclearities range between three and six metal atoms and are shown to display a variety of core geometries. Discussions centred on C-H and C-C activation, redox behaviour., magnetic susceptibility, solid state chemistry, mechanism and supramolecular chemistry are all presented. Chapter one contains some highlights of modern cluster chemistry and pays

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