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Tesis sobre el tema "Molybdenum compounds"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 25 de julio de 2025

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1

Ellis, S. R. "Characterisation of molybdenum compounds relevant to the molybdenum cofactor of the oxo-molybdenum enzymes." Thesis, University of Manchester, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376593.

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2

Rickman, Sarah. "Growth and characterization of molybdenum disulfide, molybdenum diselenide, and molybdenum(sulfide, selenide) formed between molybdenum and copper indium(sulfide, selenide) during growth." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file 0.94 Mb., 85 p, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:1435848.

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3

Şahin, Engin Sözüer Topaloğlu Işıl. "Synthesis And Characterization Oxo-İmido [Tris (3,5-Dimethyl-Pyrazol) Borate] Molybdenum Complexes/." [s.l.]: [s.n.], 2004. http://library.iyte.edu.tr/tezler/master/kimya/T000444.rar.

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4

Zhang, Liping. "Hydrodenitrogenation of organonitrogen compounds over nickel-molybdenum sulfide and Molybdenum nitride catalysts /." The Ohio State University, 1996. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487942739805674.

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5

Boldt, Paul Henry. "Room temperature indentation of molybdenum disilicide." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0003/NQ42836.pdf.

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6

Konidaris, Peter Christopher. "New cyclopentadienyl imido compounds of molybdenum and tungsten." Thesis, University of Oxford, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.306573.

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7

Pratt, David E. "Properties of biological copper, molybdenum and nickel compounds." Thesis, De Montfort University, 1985. http://hdl.handle.net/2086/4181.

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8

Dryden, Neil H. "Chemistry of bis(alkyl) nitrosyl and related complexes of molybdenum and tungsten." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/30694.

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The reactions of (ɳ⁵-C₅R₅)M(NO)(CO)₂ (R = H, Me; M = Mo, W) with PCl₅ result in the formation of the corresponding (ɳ⁵-C₅R₅)M(NO)(Cl)₂ products in high isolated yields (85-95%). These products have been fully characterized by conventional analytical and spectroscopic techniques including an X-ray crystallographic study of [ɳ⁵-C₅Me₅)Mo(NO)(Cl)₂]₂. Alkylation of the (ɳ⁵-C₅R₅)W(NO)(Cl)₂ compounds with Grignard reagents results in the formation of the corresponding complexes, (ɳ⁵-C₅R₅)W(NO)(R')₂ (R = H, Me; R' = CH₂CM₃, CH₂CM₂Ph: R = Me; R' = p-C₆H₄Me, Ph). An electrochemical study of (ɳ⁵-C₅H₅)W(N

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9

Hollandsworth, Carl Burton. "Full and half sandwich compounds of dimolybdenum and ditungsten." Connect to this title online, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1095455882.

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Thesis (Ph. D.)--Ohio State University, 2004.<br>Title from first page of PDF file. Document formatted into pages; contains xxi, 215 p.; also includes graphics (some col.). Includes bibliographical references (p. 209-215).

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10

Oloye, Femi Francis. "Synthesis and characterisation of zirconia supported molybdenum oxide and molybdenum carbide catalysts for hydroconversion of n-heptane." Thesis, University of Aberdeen, 2016. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=230933.

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The current upgrading catalysts are mainly based on the use of expensive noble metals, which are subject to deactivation due to sintering and coking. An alternative would be to introduce a non-noble metal-based catalyst. In this work, supported molybdenum carbide based systems have been assessed for this purpose. These catalysts were formed by impregnation of zirconia (and zirconium hydroxide) and sulfated zirconia (and zirconium hydroxide) with different loadings of MoO3, with an aim of finding a balance between acid sites and metal-like sites (a site capable of performing dehydrogenation and

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11

Marmolejo, Rivas Gabriela. "Biscyclopentadienyl complexes of molybdenum (IV) and Tungsten (IV) containing polysulfane ligands." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=72789.

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12

Kosidowski, Maria-Laura S. "The preparation and characterisation of intercalation compounds." Thesis, Heriot-Watt University, 1999. http://hdl.handle.net/10399/584.

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13

Gracia, Budria José Manuel. "Dft Study of Titanium Cubane and Molybdenum Sulphide Compounds." Doctoral thesis, Universitat Rovira i Virgili, 2004. http://hdl.handle.net/10803/9082.

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La síntesis y el estudio de complejos polinucleares de metales de transición constituyen un área de gran interés en la Química Inorgánica. La presencia de varios centros metálicos en una misma molécula puede modificar la reactividad que cabría esperar en compuestos metálicos. Por otra parte, estos sistemas polinucleares sirven como modelos a escala molecular para el estudio de ciertos procesos catalíticos como los que tienen lugar sobre superficies metálicas u óxidos metálicos.<br/><br/>El estudio teórico de dos familias de compuestos metálicos bien diferenciadas constituye el núcleo de esta t

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14

Raith, Alexander [Verfasser]. "Molybdenum and Tungsten Compounds in Oxidation Catalysis / Alexander Raith." München : Verlag Dr. Hut, 2011. http://d-nb.info/101484861X/34.

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15

Ng, Kee-Pui Dennis. "The chemistry of η-cycloheptatrienyl derivatives of molybdenum and tungsten". Thesis, University of Oxford, 1993. http://ora.ox.ac.uk/objects/uuid:b41ab51d-7f86-4989-8b34-3d3e06627c9c.

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This thesis describes the synthetic, structural and reactivity studies of η- cycloheptatrienyl-molybdenum and -tungsten chemistry. Chapter 1 presents an overview of the chemistry of η-cycloheptatrienyl derivatives of transition metals, in particular group 6 metals. The functional group properties of the η-cycloheptatrienyl ligand are also discussed. Chapter 2 describes the synthesis of [Mo(η-C<sub>7</sub>H<sub>7</sub>)(η<sup>5</sup>-C<sub>7</sub>H<sub>9</sub>)] from Mocl<sub>5</sub> or [MoCl<sub>4</sub>(thf)<sub>2</sub>], which provides a convenient route to η-cycloheptatrienyl-molybdenum comp

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16

Limberg, Christian. "Preparation and properties of new oxomolybdenum alkoxide and allyl compounds." Thesis, University of Oxford, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282208.

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17

Wass, S. A. "Some reactions of iron and molybdenum sulphides and related compounds." Thesis, University of Reading, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370130.

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18

Daries, Keith Louis. "Electrochemical behaviour of some organometallic compounds containing iron and molybdenum." Master's thesis, University of Cape Town, 1996. http://hdl.handle.net/11427/18619.

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The electrochemical behaviour of some mononuclear alkyl compounds of the types CpFe(CO)₂(CH₂)nCH₃ (n = 0 to 11, Cp = η-C₅H₅), CpMo(CO)₃(CH₂)nCH₃ (n = 3,4,17) have been investigated in aprotic solvents. The cyclic voltammograms obtained for all the iron alkyl compounds suggest similar behaviour after the initial oxidation. The oxidation potentials showed no linear correlation with the corresponding lengths of the alkyl chain, but could, however, be interpreted with the available Tolman's χ-values. The subsequent CO insertion reaction to give an acyl species was found to be dependent on the nucl

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19

Rellán, Piñeiro Marcos. "Molybdenum Oxides as Catalyst for Biomass-derived Compounds: a Theoretical Approach." Doctoral thesis, Universitat Rovira i Virgili, 2018. http://hdl.handle.net/10803/552410.

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Per al desenvolupament d'una indústria química més sostenible la revaloració de compostos derivats de la biomassa és un objectiu important. En aquesta tesi, la conversió d'hidrocarburs oxigenats derivats de la biomassa catalitzada per òxids de molibdè és estudiada a través de la teoria del funcional de la densitat (DFT). El primer objectiu es l'estudi de l'oxidació selectiva de metanol a formaldehid. Aquesta és una important reacció en la indústria química sobre la qual es discuteixen diverses qüestions. El camí de reacció és calculat en la superfície d'òxids de molibdè i l'activitat i select

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20

Green, David Anthony. "Neutron scattering and other studies of model compounds for molybdenum catalysts." Thesis, University of Reading, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.360768.

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21

James, Derak J. "Synthesis and photocatalytic activity of the MoS₂ and WS₂ nanoparticles in degradation of organic compounds." Muncie, Ind. : Ball State University, 2009. http://cardinalscholar.bsu.edu/653.

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22

Clark, Christopher H. "Characterization and investigation of molybdenum carbides on activated carbon as hydrogenation catalysts." Morgantown, W. Va. : [West Virginia University Libraries], 2005. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=4281.

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Thesis (M.S.)--West Virginia University, 2005.<br>Title from document title page. Document formatted into pages; contains viii, 76 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 54-57).

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23

Christensen, Nancy J. "Synthesis, characterization, and properties of some molybdenum diene complexes and related compounds." Thesis, University of British Columbia, 1989. http://hdl.handle.net/2429/29075.

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Reduction of [C’Mo(NO)I₂]₂ (Cp’ = η ⁵-C₅H₅ (Cp) or η ⁵-C₅Me₅ (Cp*)) by sodium amalgam in THF at -20°C in the presence of acyclic, conjugated dienes affords novel Cp'Mo(NO)( η⁴-s-trans-diene) complexes in isolated yields of -10 - 60%. When the diene is 2,3-dimethylbutadiene, CpMo(NO)( η⁴-cw-2,3-dimethylbutadiene) product complexes are also isolable in addition to the trans-diene isomers. However, these cis-diene compounds are the kinetic products and convert in solutions irreversibly to the isomeric trans-diene complexes. A preliminary kinetic study of this isomerization indicates that the isom

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24

Wagner, George Wayne. "Synthesis and dynamics of [gamma]-alumina supported molybdenum subcarbonyls and model compounds." Diss., Virginia Polytechnic Institute and State University, 1987. http://hdl.handle.net/10919/49904.

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Molybdenum hexacarbonyl supported on 𝛾-alumina is a precursor to an active olefin metathesis catalyst. Surface sites on the alumina act as coordinating ligands to stabilize various molybdenum subcarbonyl species. The formation of these species can be controlled by appropriate activation conditions. In particular, Mo(CO)₃(ads) can be quantitatively formed upon activation of Mo(CO)₆ on 𝛾-alumina at 100°C in flowing helium. In the reaction, three carbon monoxide ligands are replaced by either surface OH⁻ or O²⁻ depending on the degree of surface hydroxylation. This species has been shown to be ac

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25

Darujati, Anna Rini Sekar. "Oxidation stability and activity of bulk, supported and promoted molybdenum carbide catalysts for methane reforming." Online access for everyone, 2005. http://www.dissertations.wsu.edu/Dissertations/Spring2005/A%5FDarujati%5F050405.pdf.

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26

Rohwer, E. A. (Elisabeth Anna). "A comparative study of the complex formation of molybdenum(VI) and tungsten(VI) with ligands derived from carboxlic acids." Thesis, Stellenbosch : Stellenbosch University, 2000. http://hdl.handle.net/10019.1/51560.

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27

Flemström, Andreas. "Solid molybdenum(II) chloride cluster compounds from a hydrogen bonding point of view /." Stockholm : Department of Inorganic Chemistry, Stockholm University, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-491.

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28

McDowall, Andrew David. "The preparation and characterisation of intercalation compounds of molybdenum sulphide and related phases." Thesis, Heriot-Watt University, 2003. http://hdl.handle.net/10399/303.

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29

Meyer, Annalene. "The synthesis of α-alkoxy and α-aminostannanes as precursors to Novel Chromium Fischer Carbenes". Thesis, Rhodes University, 2012. http://hdl.handle.net/10962/d1005036.

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The present study involves the use of main group organometallics: organostannanes and organolithiums as precursors to chromium Fischer carbene complexes. Fischer carbenes are well stabilized by the π‐donor substituents such as alkoxy and amino groups and low oxidation state metals such as Group 6 (Chromium, Molybdenum or Tungsten). Carbenes are an important intermediate in the synthesis of a range of compounds through cyclopropanations, insertions, coupling and photochemical reactions. Synthesis and successful characterisation of three α‐alkoxystannanes was achieved via nucleophilic addition o

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30

James, Derak J. "Synthesis and photocatalytic activity of the MoS2 and WS2 nanoparticles in degradation of organic compounds." CardinalScholar 1.0, 2009. http://liblink.bsu.edu/uhtbin/catkey/1503981.

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Nanoparticles of MoS2 and WS2 were synthesized by decomposing the appropriate metal hexacarbonyl in the presence of sulfur dissolved in decalin at 140°C. A significant fraction of the nanoparticles was ≤ 15 nm in diameter as verified by Transmission Electron Microscopy. The process was repeated in the presence of silica and then titania to produce supported metal sulfides. The unsupported nanoparticles were found to exhibit a size-dependent shift in their threshold UV-visible absorption due to quantum confinement. Photocatalytic properties of each sulfide from synthesis in decalin were explore

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31

Ghosh, Baidyanath. "Synthesis and Physicochemical Studies on Co-ordination Compounds of molybdenum, Copper, Iron and Zinc with 2-Amino Substituted Pterins." Thesis, University of North Bengal, 2016. http://ir.nbu.ac.in/handle/123456789/2140.

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32

Shyu, Shin-guang. "Synthesis and mechanistic study of dinuclear phosphido-bridged complexes of iron, molybdenum, and tungsten /." The Ohio State University, 1986. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487266362338179.

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33

Ali, Md Afsar. "Synthetic, physico-chemical and reactivity aspects of co-ordination compounds of molybdenum and dioxounarium (vi) with pterin and aldimine ligands." Thesis, University of North Bengal, 2008. http://hdl.handle.net/123456789/1303.

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34

Lin, Ping. "Syntheses, structures and reactions of compounds involving cyanopyridines or molybdenum-oxygen-sulfur clusters as ligands." Thesis, University of Newcastle Upon Tyne, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.424135.

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35

Hollandsworth, Carl B. "Full and half sandwich compounds of dimolybdenum and ditungsten." The Ohio State University, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=osu1095455882.

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36

Greco, Jane Brock 1973. "Synthetic approaches to new three coordinate Group 6 compounds : chromium alkenyls, molybdenum thiolates and tungsten amides." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/118107.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 2001.<br>Includes bibliographical references (leaves 161-175).<br>A series of alkenyl (-C[Ad]Ar) and thioalkenyl (-SC[Ad]Ar, Ad=2-adamantylidene, Ar=3,5-Me2C6H3, 4-tBuC6H4, 3,5-(C6H5)2C6H3, 3,5-(4-tBu-C6H4)2 C6H3) ligands have been prepared. The alkenyl ligands are synthesized by bromination and dehydrohalogenation of an adamantyl olefin to yield an alkenyl bromide. The Grignard reagent, derived from the bromide, is used either as a transmetallation reagent, or reacted with elemental sulfur to form a magnesium thiolate

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37

ROCHA, RENATA A. "Preparação e caracterização de compostos com matriz de LAMOX." reponame:Repositório Institucional do IPEN, 2005. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11292.

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38

Chang, Chaung-Sheng Jesse. "Spectroscopic and electrochemical studies of compounds with a mononuclear monooxomolybdenum(V) core: Approaches to the molybdenum cofactor." Diss., The University of Arizona, 1991. http://hdl.handle.net/10150/185350.

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This research has been directed at the study of the possible role of ligand substituents on the molybdenum center of a series of mononuclear monooxomolybdenum(V) complexes. The chemical and/or physical properties of 49 compounds containing dithiolato, 2-mercaptoethanolato, diolato, alkanethiolato, alkoxo, or para-substituted phenolato ligands are studied.

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39

Middlemas, Michael Robert. "Fabrication, strength and oxidation of molybdenum-silicon-boron alloys from reaction synthesis." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/28253.

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Thesis (M. S.)--Materials Science and Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: Cochran, Joe; Committee Member: Berczik, Doug; Committee Member: Sanders, Tom; Committee Member: Sandhage, Ken; Committee Member: Thadhani, Naresh.

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40

Zhang, Shulin. "Studies of Solvent Displacement from Solvated Metal Carbonyl Complexes of Chromium, Molybdenum, and Tungsten." Thesis, University of North Texas, 1990. https://digital.library.unt.edu/ark:/67531/metadc331992/.

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Flash photolysis techniques were applied to studies of solvent displacement by Lewis bases (L) from solvated metal carbonyl complexes of Cr, Mo, and W. On the basis of extensive studies of the reaction rate laws, activation parameters , and linear-free-energy-relationships, it was concluded that the mechanisms of solvent displacement reactions depend on the electronic and steric properties of the solvents and L, as well as the identities of the metal atoms. The strengths of solvent-metal bonding interactions, varying from ca. 7 to 16 kcal/mol, and the bonding "modes" of solvents to metals are

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41

SILVA, NESTOR C. da. "Estudo e otimizacao das condicoes de preparo do gel de molibdato de zirconio usado nos geradores de sup(99) Mo - sup(99m) Tc." reponame:Repositório Institucional do IPEN, 2001. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10966.

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42

Hillard, Elizabeth Anne. "Carboxylato compounds of chromium, copper, rhodium and molybdenum and new advances in the chemistry of V2(NXN)4." Texas A&M University, 2003. http://hdl.handle.net/1969.1/57.

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This dissertation comprises the investigation of two subjects in the field of dimetal paddlewheel-type compounds containing metal-metal bonds: unsolvated transition metal carboxylates and triply bonded divanadium compounds. The first subject is very mature; dichromium tetraacetate was first synthesized in 1844, and hundreds of dimetal tetracarboxylates have been structurally characterized to date. A general question concerning the complexes of the type M2L4-Xn (where n = 0 to 2) is the extent to which the M-M distances are influenced by the presence of axial ligands, X. However, virtually non

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43

Samuel, Prinson Poikayil [Verfasser], Carola [Akademischer Betreuer] Schulzke, and George M. [Akademischer Betreuer] Sheldrick. "Molybdenum and tungsten compounds with dithiolene ligands inspired by molybdopterin as models for the molybdenum and tungsten cofactors / Prinson Poikayil Samuel. Gutachter: Carola Schulzke ; George M. Sheldrick. Betreuer: Carola Schulzke." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2011. http://d-nb.info/1043992510/34.

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44

Hinni, Aleka. "Synthesis of metal sulphur complexes with potential industrial applications." Thesis, University of Oxford, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.711612.

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45

Mader, Michele Lynn. "Synthesis and characterization of oxomolybdenum(V) compounds with two or three thiolate donor atoms: Analogues for the molybdenum center of sulfite oxidase." Diss., The University of Arizona, 2000. http://hdl.handle.net/10150/284099.

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The MoOS₃ active site of sulfite oxidase has drawn attention to a relatively unexplored area of molybdenum coordination chemistry. Cis,trans-(L-N₂S₂)MoᵛO(SR)[L-N₂S₂H₂ = N,N '-dimethyl-N,N'-bis(mercaptophenyl)ethylenediamine: R = CH₂Ph. CH₂CH₃, and p-C₆H₄-Y (Y = CF₃, Cl, Br, F, H, CH₃, CH₂CH₃, and OCH₃)] are the first structurally, spectroscopically, and electrochemically characterized mononuclear Mo compounds with three thiolate donors in the equatorial, as occurs in sulfite oxidase. These compounds provide a well-defined platform for the systematic investigation of the electronic structures o

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46

Hibino, Takashi, Mitsuru Sano, Masahiro Nagao, and Pilwon Heo. "A High-Performance Mo2C-ZrO2 Anode Catalyst for Intermediate-Temperature Fuel Cells." The Electrochemical Society, 2007. http://hdl.handle.net/2237/18429.

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47

Posada, Pérez Sergio. "Heterogeneous catalysis of green chemistry reactions on molybdenum carbide based catalysts." Doctoral thesis, Universitat de Barcelona, 2018. http://hdl.handle.net/10803/552405.

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Our society has a problem with the use of fossil fuels, due to the vast and exceeding emissions derived from human activities. Two ways could be consider to mitigate these harmful effects. On the one hand, the capture, activation, and conversion of these hazardous gases towards valuable compounds, and on the other hand, the substitution of fossil fuels for renewable energies. This thesis encompasses the study of two different green chemistry reactions to convert the most abundant greenhouse gas in Earth's atmosphere and the production of a new environmental friendly fuel, the hydrogen. In the

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48

Kocak, Fatma Sanem. "Synthesis And Characterization Of Tetracarbonyl[n,n&#039." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606094/index.pdf.

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In this study a bidentate ligand containing two ferrocenyl moieties, N,N&#039<br>-bis(ferrocenylmethylene)ethylenediamine, was prepared by condensation reaction of ferrocenecarboxyaldehyde and ethylenediamine on refluxing in benzene. The molecule was identified by IR, Raman, UV-Vis, 1H-, 13C-NMR spectroscopies. Then, this bidentate molecule was reacted with tetracarbonyl(bicyclo[2.1.1] hepta-2,5-diene)molybdenum(0). The ligand substitution reaction in toluene yielded the new complex, tetracarbonyl[N,N&acute<br>-bis(ferrocenylmethylene)ethylenediamine] molybdenum(0). This new complex could be i

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49

Awad, Hani H. (Hani Hanna). "Thermal and Flash Photolysis Studies of Ligand-Exchange Reactions of Substituted Metal Carbonyl Complexes of Cr and Mo." Thesis, University of North Texas, 1989. https://digital.library.unt.edu/ark:/67531/metadc332097/.

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Thermal and flash photolysis studies of ligand-substitution reactions of cis-(pip)(L)M(CO)_4 by L' (pip = piperidine; L, L' = CO, phosphines, phosphites; M = Cr, Mo) implicate square-pyramidal [(L)M(CO)_4], in which L occupies a coordination site in the equatorial plane, as the reactive species. In chlorobenzene (= CB) solvent, the predominant species formed after flash photolysis and a steady-state intermediate for the thermal reaction is cis—[(CB)(L)M(CO)_4], for which rates of CB-dissociation increase with increasing steric demands of coordinated L. Rates of CB-dissociation from trans-[(CB)

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50

Panchanan, Subrata. "Studies on coordination compounds of dioxouranium(VI) and molybdenum with ligands derived from amino acids especially with emidazole, amine and amide r groups." Thesis, University of North Bengal, 1993. http://hdl.handle.net/123456789/739.

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