Academic literature on the topic 'First Row Transition Metals'

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Journal articles on the topic "First Row Transition Metals"

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Eisenhart, Reed J., Laura J. Clouston, and Connie C. Lu. "Configuring Bonds between First-Row Transition Metals." Accounts of Chemical Research 48, no. 11 (October 22, 2015): 2885–94. http://dx.doi.org/10.1021/acs.accounts.5b00336.

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Belov, Dmitry S., Gabriela Tejeda, and Konstantin V. Bukhryakov. "Olefin Metathesis by First‐Row Transition Metals." ChemPlusChem 86, no. 6 (June 2021): 924–37. http://dx.doi.org/10.1002/cplu.202100192.

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Golen, James A., Duyen N. K. Pham, Mrittika Roy, Ava Kreider-Mueller, and David R. Manke. "Pyridine complexes of some first-row transition metals." Acta Crystallographica Section A Foundations and Advances 74, a1 (July 20, 2018): a205. http://dx.doi.org/10.1107/s0108767318097945.

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van der Vlugt, Jarl Ivar. "Cooperative Catalysis with First-Row Late Transition Metals." European Journal of Inorganic Chemistry 2012, no. 3 (September 29, 2011): 363–75. http://dx.doi.org/10.1002/ejic.201100752.

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Russo, Thomas V., Richard L. Martin, and P. Jeffrey Hay. "Density functional calculations on first‐row transition metals." Journal of Chemical Physics 101, no. 9 (November 1994): 7729–37. http://dx.doi.org/10.1063/1.468265.

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Sleven, Jurgen, Thomas Cardinaels, Christiane Görller-Walrand, and Koen Binnemans. "Liquid-crystalline metallophthalocyanines containing late first-row transition metals." Arkivoc 2003, no. 4 (March 14, 2003): 68–82. http://dx.doi.org/10.3998/ark.5550190.0004.406.

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Shetti, Shreedhar N., A. Sitaramachandra Murty, and Gopal L. Tembe. "Isonitrosoacetylacetone dithiosemicarbazone complexes of some first row transition metals." Transition Metal Chemistry 18, no. 5 (October 1993): 467–72. http://dx.doi.org/10.1007/bf00136605.

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Lambers, Eric S. "Study of the First Row Transition Metals by AES." Surface Science Spectra 2, no. 4 (October 1993): 271–304. http://dx.doi.org/10.1116/1.1247709.

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Duarte, Jorge, and M. A. Ray. "AES Study of the First Row of Transition Metals." Surface Science Spectra 2, no. 4 (October 1993): 305–42. http://dx.doi.org/10.1116/1.1247710.

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Madhu,, N. T., P. k. Radhakrishnan,, Matthias Grunert,, Peter Weinberger,, and Wolfgang Linert,. "Antipyrine and its Derivatives with First Row Transition Metals." Reviews in Inorganic Chemistry 23, no. 1 (January 2003): 1–24. http://dx.doi.org/10.1515/revic.2003.23.1.1.

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Dissertations / Theses on the topic "First Row Transition Metals"

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Lee, Graham Mark. "Fluorocarbene, Fluoroalkyl, and Fluoride Complexes of First-Row Transition Metals." Thesis, Université d'Ottawa / University of Ottawa, 2017. http://hdl.handle.net/10393/36704.

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Fluorinated organic compounds play important roles in our society, as these products range from life-saving pharmaceuticals and agrochemicals, to fluoropolymers with extremely high thermal and chemical stability. Although elemental fluorine (F2) is the most reactive element, some fluoro-organic compounds are chemically inert. As such, controlled reactivity of fluorine or highly-fluorinated organic fragments is a considerable, yet important challenge for synthetic chemists. Fluoro-organometallic chemistry has been studied for decades, as researchers attempt to maximize the potential of metal mediated/catalyzed processes for the synthesis of fluorinated organic molecules. Within this framework, metal fluorocarbene complexes are particularly interesting because of their highly tunable reactivity, and are proposed for use in important metathesis/polymerization reactions of perfluorinated alkenes. While considerable work is still needed to make these proposed reactions a reality, this thesis outlines contributions from our research group. We showed that cobalt fluorocarbene complexes CpCo(=CFRF)(PPh2Me) (RF = F, CF3) undergo [2+2] cycloaddition reactions with tetrafluoroethylene (TFE) and phenylacetylene to form perfluorometallacyclobutane and partially fluorinated metallacyclobutene products, respectively. For both reactions, computational studies reveal a stepwise ring-closing mechanism, which proceeds through a singlet 1,4-diradical intermediate. Next, the formation of CpCo(=CF2)(L) complexes is achieved via the direct addition of difluorocarbene, generated in situ, to a cobalt(I) precursor. Subsequent addition of CF2 to cobalt fluorocarbene complexes results in [2+1] cycloaddition and formation of perfluorinated alkene complexes. The [2+1] addition is highly favored as the cobalt fluorocarbenes readily react with electrophilic CF2. A series of experiments provide evidence for the stepwise nature of fluoroalkene complex formation. From Co(I) fluorocarbene complexes, the focus shifts to preparing metal fluorocarbenes with electrophilic-type reactivity. The synthesis of bis(perfluoroalkyl) complexes serve as precursors for preparation of perfluoroalkyl cobalt(III) fluorocarbenes, which undergo migratory insertion reactions of the fluorocarbene into the perfluoroalkyl ligand. Using a similar synthetic approach, nickel(II) and palladium(II) difluorocarbene complexes are prepared from their corresponding trifluoromethyl precursors. The synthesis, characterization and reactivity of cobalt(III) fluoride complexes is also described, including the catalytic fluorination of acyl chlorides, demonstrating the first example of a cobalt(III) catalyzed fluorination reaction. The effects of the various ancillary ligands on these cobalt catalysts are investigated using high-throughput experimentation technology, and the scope of the reaction is expanded to include the synthesis of a variety of acyl fluoride compounds. Finally, the results and learnings from this work will be summarized and highlighted. The future directions and novel research which could result from the continuation of these projects is discussed, with an emphasis placed on the areas believed to have the highest potential impact.
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Sole, Kathryn Clare. "Solvent extraction of first-row transition metals by thiosubstituted organophosphinic acids." Diss., The University of Arizona, 1993. http://hdl.handle.net/10150/186480.

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Organophosphorus compounds are well known as solvent-extraction reagents. Two new reagents in this class are Cyanex 302 and Cyanex 301, the respective mono- and dithio analogs of the commercial extractant, Cyanex 272 (bis(2,4,4-trimethylpentyl)-phosphinic acid). The replacement of oxygen by sulfur in these reagents decreases their pKₐ, and enables extraction to be carried out at much lower pH than previously attained. A comparative characterization of Cyanex 272, Cyanex 302, and Cyanex 301 is undertaken. The aggregation and partitioning behavior of these reagents is determined. A comparison of the solvent extraction behavior of first-row transition-metal ions from manganese to zinc in acidic sulfate solution by these reagents is reported. Distribution coefficients shift to lower pH with increasing sulfur substitution of the extractant, the greatest effect being observed for soft Lewis acids. These reagents are found to be strong extractants for the transition metals examined, but poor extractants for alkaline-earth ions and manganese(II). Certain metal ions, in particular copper(II) and silver(I), are, however, extremely difficult to strip, which may mitigate against potential applications. Stoichiometry of the extraction reactions and the nature of the metal complexes formed are postulated based on slope-analysis techniques and spectroscopic and molecular-mass measurements. Molecular modelling of the extractants and extracted species is presented. Some reasons for the enhanced stability of the complexes formed with certain metals are discussed in terms of d-electron effects, donor-/acceptor-atom interactions, ligand-field observations, and steric effects associated with the extractants.
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Salt, J. E. "[1,2-bis(dimethylphosphino)ethane] complexes on the first row transition metals." Thesis, Imperial College London, 1985. http://hdl.handle.net/10044/1/37844.

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Radulović, Stojan. "Solvation, reactivity and spectroscopy of complexes of some first row transition metals." Thesis, University of Leicester, 1988. http://hdl.handle.net/2381/27867.

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The work in this thesis is mainly concerned with the discussion of effect of solvation on the reaction kinetics of inorganic complexes. Rate constants for chemical reactions in various aqueous cosolvent systems have been measured and analysed. Crystal structure of several Fe (II) complexes are analysed from crystallographic data for possible structural parameters which might have effect on solvation. Solubility data, for a range of inorganic salts containing simple and complex ions, are reported for aqueous solutions and for solutions in aqueous cosolvent mixtures. Transfer chemical potentials for single ions in aqueous i-PrOH and t-BuOH solvent mixtures are determined using solubility data for salts in conjunction with TATB, tetraphenylarsonium tetraphenylboranate, assumption and are compared with those in corresponding aqueous methanol, ethanol and acetone solvent mixtures. Kinetic data are reported for reaction between [Fe (gmi)3]²+ and hydroxide ions at atmospheric and elevated pressures in above binary aqueous mixtures. Initial state and transition state analysis of reactivity trends for hydroxide attack on other Fe (II) diimine complexes in aqueous methanol solvent mixtures are reported. Dependence of visible absorption spectra on solvent has been examined for a number of Fe (II) and Fe (III) mixed ligand complexes. Preliminary redox study of the of Fe (II) and Fe (III) complexes is also reported.
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Moneo, Corcuera Andrea. "Bistable molecular materials: triazole-based coordination chemistry of first row transition metals." Doctoral thesis, Universitat Rovira i Virgili, 2019. http://hdl.handle.net/10803/668881.

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En la present tesi doctoral presentem el magnetisme molecular bàsic de compostos de coordinació basats en un lligant di-anionico: (L-2 = 4- (1,2,4-triazole-4-il) etanosulfonato). En particular, vam estudiar el fenomen de transició d'espín d'un trímer de ferro (II) poli-aniònic en diferents escales, des d'una escala macroscòpica ("bulk") fins a nivells moleculars, acabant amb la deposició en superfície. D'una banda, el comportament SCO "macroscòpic" es va modular canviant l'empaquetatge de vidre i la connectivitat entre els trímers amb una estratègia d'intercanvi catiònic. D'altra banda, hem trobat bi-estabilitat en sistemes altament diluïts del trímer de Fe (II), en una solució mixta sòlida i en dissolució, on les forces de cooperació entre trímers s'hi han reduït fins a nivells moleculars. Aquest resultat ens anima a estudiar la deposició i el comportament del trímer en diverses superfícies amb vista a un primer acostament cap a una aplicació real. Finalment, hem fabricat una pel·lícula nanomètrica del compost sobre sílice, amb propietats de transició d'espín intactes. A més, també vam poder impulsar el procés de miniaturització més enllà de la mida nanomètrica en créixer una subcapa ordenada del complex en una superfície d'or a través d'una deposició d'alt buit.
En la presente tesis doctoral presentamos el magnetismo molecular básico de compuestos de coordinación basados en uno ligando *di-*anionico: (L-2 = 4- (1,2,4-*triazole-4-*il) *etanosulfonato). En particular, estudiamos el fenómeno de transición de espín de un trímero de hierro (II) *poli-aniónico en diferentes escalas, desde una escala macroscópica ("*bulk") hasta niveles moleculares, acabando con la deposición en superficie. Por un lado, el comportamiento *SCO "macroscópico" se moduló cambiando el empaque de vidrio y la conectividad entre los trímeros con una estrategia de intercambio catiónico. Por otro lado, hemos encontrado *bi-estabilidad en sistemas altamente diluidos del trímero de Fe (II), en una solución mixta sólida y en disolución, donde las fuerzas de cooperación entre trímeros se han reducido hasta niveles moleculares. Este resultado nos anima a estudiar la deposición y el comportamiento del trímero en varias superficies en orden a un primer acercamiento hacia una aplicación real. Finalmente, hemos fabricado una película *nanomètrica del compuesto sobre sílice, con propiedades de transición de espín intactos. Además, también pudimos impulsar el proceso de miniaturización más allá de la medida *nanomètrica al crecer una *subcapa ordenada del complejo en una superficie de oro a través de una deposición de alto vacío.
At the present doctoral thesis present the basic molecular magnetism of compounds of coordination based at one binding *di-*anionico: (*L-2 = 4- (1,2,4-*triazole-4-*il) *etanosulfonato). In particular, we studied the phenomenon of transition of spin of a trimer of iron (*II) *poli-*aniònic at distinct scales, since a macroscopic scale ("*bulk") until molecular levels, ending with the deposition at surface. On the one hand, the behaviour *SCO "macroscopic" modulated capsizing the packaging of glass and the connectivity among the trimers with a strategy of exchange *catiònic. On the other hand, we have found *bi-stability at systems highly diluted of the trimer of Faith (*II), at a solid mixed solution and at dissolution, where the forces of cooperation among trimers have reduced until molecular levels. This result warms us at studying the deposition and the behaviour of the trimer at several surfaces with a view to a first approach to a real app. Finally, we have fashioned a film *nanomètrica of the compound on silica, with properties of transition of intact spin. Besides, also we could further the process of miniaturisation further of the size *nanomètrica at growing a *subcapa ordered of the complex at a surface of gold through a deposition of tall void.
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Scharf, Austin Bennett. "First-Row Transition Metal Complexes of Dipyrrinato Ligands: Synthesis and Characterization." Thesis, Harvard University, 2013. http://dissertations.umi.com/gsas.harvard:11090.

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A library of variously-substituted dipyrrins and their first-row transition metal (Mn, Fe, Cu, Zn) complexes have been synthesized, and the effects of peripheral substituents on the spectroscopic, electrochemical, and structural properties of both the free-base dipyrrins and their metal complexes has been explored. The optical and electrochemical properties of the free dipyrrins follow systematic trends; with the introduction of electron-withdrawing substituents in the 2-, 3-, 5-, 7-, and 8-positions of the dipyrrin, bathochromic shifts in the absorption spectra are observed, oxidation becomes more difficult, and reduction becomes more facile. Similar effects are seen for iron(II) dipyrrinato complexes, where peripheral substitution of the dipyrrinato ligand induces red-shifts in the absorption spectra and increases the oxidation potential of the bound iron. Steric interactions between the peripheral halogens and the 5-substituent of the dipyrrinato ligand can induce distortion of the ligand from planarity, resulting in widely varying 57Fe Mössbauer quadrupole splitting (|ΔEQ|) parameters.
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Brunker, Timothy J. "Studies of half-sandwich tris(pyrazolyl)borate complexes of first row transition metals." Thesis, University of Oxford, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.393565.

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Rodríguez, Serrat Mònica. "First row transition metal carbenes: from supporting ligands to organic reactive fragments." Doctoral thesis, Universitat de Girona, 2019. http://hdl.handle.net/10803/668829.

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In the last decades, carbenes have shown a huge potential and versatility in organometallic and organic chemistry. In each of these fields, first row transition metal chemistry is less developed than noble metal complexes. In the pursuit of more environmentally friendly systems, this thesis will be focused on the development of new organometallic complexes and reactivities using earth abundant metals. In the organometallic field, the synthesis of a novel ligand bearing a chelating scaffold and a mesoionic carbene moiety has allowed the preparation of a family of first row transition metal complexes. Using carbenes as intermediates in organic synthesis, the functionalization of aromatic Csp2-H bonds and aliphatic Csp3-H bonds by the activation of diazoacetates could be developed using non-heme iron complexes
En les últimes dècades, els carbens han mostrat un gran potencial i versatilitat tan en la química organometàl·lica com en la orgànica. En qualsevol d’aquest camps, els metalls de la primera sèrie de transició han estat menys utilitzats que els metalls nobles. Davant la recerca de sistemes que siguin més benignes amb el medi ambient, aquesta tesi està enfocada al desenvolupament de nous complexes organometàl·lics i reactivitats utilitzant metalls abundants a la natura. En el camp de la organometàl·lica, la síntesi d’un lligand nou el qual combina una estructura quelatant i un carbè mesoiònic va permetre la síntesi de complexos amb metalls de la primera sèrie de transició amb interessants propietats. Utilitzant carbens com a intermedis en síntesi orgànica, s’ha descrit la funcionalització d’enllaços Csp2-H aromàtics i d'enllaços Csp3-H alifàtics a través de l’activació de diazoacetats, utilitzant complexos de ferro no hemo
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Tilford, Claire. "Experimental investigations of the electronic interactions within multinuclear first row transition metal complexes." Thesis, University of East Anglia, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302144.

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Sazama, Graham Thomas. "Late First-Row Transition Metals in Weak Ligand Fields - Correlating High-Spin Electronic Structure and Reactivity." Thesis, Harvard University, 2013. http://dissertations.umi.com/gsas.harvard:11012.

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High spin has been shown to be necessary for optimal reactivity of transition metal complexes toward the activation and functionalization of C-H bonds. This thesis presents our examination of the weak-field, tripodal, trianionic tris(pyrrolyl)ethane (tpe) ligand and its complexes. Outer-sphere oxidation of the manganese, iron, cobalt, nickel and zinc complexes of tpe were performed by electrochemical and chemical methods. Electrochemical oxidation occurred at the same potential for each species, suggesting a ligand-based oxidation. The reaction product of chemical oxidation of iron showed oxidation of a pyrrole unit followed by H-atom abstraction to form a dichelated species. Density functional theory calculations confirm these results, and in silico oxidation of the complexes is entirely ligand-based. These results establish that tpe complexes are oxidized at the pyrrolide subunits in outersphere electron transfers, and elucidate minimal metal-ligand electronic communication. The more reactive \([(tpe)Fe(THF)]^−\) anion exhibits rapid binding of three equivalents of tert-butyl isonitrile, while reaction with excess carbon monoxide induces ligand fragmentation to form a species wherein two molecules of carbon monoxide have been reductively coupled. A mechanism based on the observed isonitrile species is proposed. The use of inner-sphere oxidant reagents allows for several stable iron (III) complexes of tpe to be isolated and characterized. Alkyl peroxides and alkyl disulfides, organic azides, and diphenyldiazomethane are all shown to oxidize iron by a single electron. Reaction with organic azides results in the formation of iron (III) amide species, likely as a result of Hatom abstraction. The weak-field of tpe creates a high propensity for forming high-spin iron (III) complexes, to the extent that diphenyldiazoalkane acts as a redox-active ligand and provides a one-electron reservoir to reveal a high-spin \(Fe^{3+}\). Spectroscopic and computational studies were undertaken to rigorously assign the physical oxidation state of iron in all cases. Given the outer-sphere redox liability of the tpe ligand, and the capability for inner-sphere oxidation local to iron, tpe complexes of iron represent a new class of metal-ligand redox activity, wherein the metal and ligand form two separate redox reservoirs, accessible via different mechanisms.
Chemistry and Chemical Biology
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Books on the topic "First Row Transition Metals"

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Chemistry of the first-row transition metals. Oxford: Oxford University Press, 1999.

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Inman, Matthew. A study of first and second row transition metal defects in oxide and fluoride crystal hosts using the MSX[alpha] method. Birmingham: University of Birmingham, 1995.

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Bogusława, Jeżowska-Trzebiatowska, Legendziewicz J, and Stręk W, eds. Proceedings of the First International School on Excited States of Transition Elements, Książ Castle, Poland, June 20-25, 1988. Singapore: World Scientific, 1989.

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1919-, Finlayson D. M., ed. Localisation and interaction in disordered metals and doped semiconductors: Proceedings of the Thirty-First Scottish Universities' Summer School in Physics, St. Andrews, August 1986 : a NATO Advanced Study Institute. Edinburgh: The School, 1986.

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Muhly, James D. Metals and Metallurgy. Edited by Gregory McMahon and Sharon Steadman. Oxford University Press, 2012. http://dx.doi.org/10.1093/oxfordhb/9780195376142.013.0039.

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This article reviews the impact of metals and metallurgy on Anatolian societies, from the first emergence of metal experimentation in the Neolithic to the full-blown metallurgical societies of the Bronze Age. Evidence suggests that Late Chalcolithic metalworkers thought of tin as a metal to be used for coating the surface of a copper artifact, presumably to imitate the appearance of silver, before they thought of adding tin to molten copper to produce bronze. During the transition from Late Chalcolithic to the beginning of the Early Bronze Age, ca. 3000 BCE, the main focus of metallurgical development in Anatolia shifted from the eastern part of the country to central and western Anatolia.
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Book chapters on the topic "First Row Transition Metals"

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Templeton, J. L. "Between First-Row Transition Metals (Excluding Chromium)." In Inorganic Reactions and Methods, 48–49. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145296.ch39.

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Roundhill, D. M. "Photochemistry of Complexes of First-Row Transition Metals." In Photochemistry and Photophysics of Metal Complexes, 25–65. Boston, MA: Springer US, 1994. http://dx.doi.org/10.1007/978-1-4899-1495-8_2.

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Hartung, John, and Jack R. Norton. "Catalysis Involving the H• Transfer Reactions of First-Row Transition Metals." In Catalysis without Precious Metals, 1–24. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2010. http://dx.doi.org/10.1002/9783527631582.ch1.

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Lukehart, C. M., Stephen B. Milne, S. R. Stock, R. D. Shull, and James E. Wittig. "Nanocomposites Containing Nanoclusters of Selected First-Row Transition Metal Phosphides." In ACS Symposium Series, 195–204. Washington, DC: American Chemical Society, 1996. http://dx.doi.org/10.1021/bk-1996-0622.ch013.

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Grosvenor, Andrew P., Mark C. Biesinger, Roger St C. Smart, and Andrea R. Gerson. "The Influence of Final-State Effects on XPS Spectra from First-Row Transition-Metals." In Springer Series in Surface Sciences, 217–62. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-24043-5_10.

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Atanasov, Mihail, and Peter Comba. "Magnetic Anisotropy in Cyanide Complexes of First Row Transition Metal Ions." In Structure and Function, 53–85. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-2888-4_3.

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Fang, Gui-Chun, Yong-Feng Cheng, Zhang-Long Yu, Zhong-Liang Li, and Xin-Yuan Liu. "Recent Advances in First-Row Transition Metal/Chiral Phosphoric Acid Combined Catalysis." In Asymmetric Organocatalysis Combined with Metal Catalysis, 153–84. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-43851-7_7.

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Mavridis, A., K. Kunze, J. F. Harrison, and J. Allison. "Gas-Phase Chemistry of First-Row Transition Metal Ions with Nitrogen-Containing Compounds." In ACS Symposium Series, 263–78. Washington, DC: American Chemical Society, 1990. http://dx.doi.org/10.1021/bk-1990-0428.ch018.

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Yoshikai, Naohiko. "Hydroarylation of Alkynes and Alkenes using Group 7-9 First-Row Transition Metal Catalysts." In Catalytic Hydroarylation of Carbon-Carbon Multiple Bonds, 193–216. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2017. http://dx.doi.org/10.1002/9783527697649.ch6.

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Rey, P., D. Luneau, and A. Cogne. "Coordination Chemistry of the Imino Nitroxides. Ferromagnetic Behavior of Some First Row Transition Metal Complexes." In Magnetic Molecular Materials, 203–14. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3254-1_14.

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Conference papers on the topic "First Row Transition Metals"

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Murai, Kei-ichiro, Yohei Suzuki, Toshihiro Moriga, and Akira Yoshiasa. "EXAFS and XPS Study of Rutile-Type Difluorides of First-Row Transition Metals." In X-RAY ABSORPTION FINE STRUCTURE - XAFS13: 13th International Conference. AIP, 2007. http://dx.doi.org/10.1063/1.2644559.

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Misaizu, Fuminori, M. Abdul Latif, Jenna W. J. Wu, Ryoichi Moriyama, Motoyoshi Nakano, Kiichirou Koyasu, and Keijiro Ohshimo. "Structures of stable oxide cluster ions of first-row late transition metals: An ion mobility-mass spectrometric study." In PROCEEDINGS OF THE INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2019 (ICCMSE-2019). AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5137928.

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Kiawi, D., L. B. F. M. Waters, W. Buma, J. Oomens, and J. Bakker. "IR SPECTROSCOPY OF FIRST-ROW TRANSITION METAL CLUSTERS AND THEIR COMPLEXES WITH SIMPLE MOLECULES." In 69th International Symposium on Molecular Spectroscopy. Urbana, Illinois: University of Illinois at Urbana-Champaign, 2014. http://dx.doi.org/10.15278/isms.2014.rg13.

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Miglietti, Warren, Ian Summerside, Simone Hoevel, and Zaki Zainuddin. "Repair Process Technology Development and Experience for W501F Row 1 Hot Gas Path Blades." In ASME Turbo Expo 2010: Power for Land, Sea, and Air. ASMEDC, 2010. http://dx.doi.org/10.1115/gt2010-22443.

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Volatile market dynamics in the electrical power generation field continues to force power companies to identify prudent material cost reductions opportunities in their Operations and Maintenance (O&M) business. Today, there is an industry-recognized need for advanced hot gas path component repair and reconditioning capability for operators of F-Class gas turbines that can be highly cost effective with short cycle times. The SGT6-5000F (W501FD) engine, an “F” class machine has been in operation for more than a decade now. Of importance to operators/users and owners of this gas turbine engine is the ability to recondition the turbine “hot-end section” components, in order to support maintenance requirements. The first 2 rows of blades are unshrouded; whereas the last 2 rows are shrouded. The row 1 blades show severe degradation and thus repair of this component has been a focus point for PSM. The technical objective is to develop repair schemes for the row 1 blades since this component (other than the Transition Piece (TP)) has the highest frequency of replacement, plus is the highest replacement cost per component. Special processes have been developed for these components repairs, including but not limited to: a) Acid stripping of the coating; b) Machining off of the original brazed tip cap plates; c) High frequency gas tungsten arc welding and vacuum diffusion braze repair of platform cracks; d) High frequency gas tungsten arc weld attachment or laser welding of new tip cap plates; e) Laser metal forming/cladding of new squealer tips; f) Rejuvenation heat treatment; g) Application of superior MCrAlY and TBC coating to that originally applied. This technical paper describes the repair process development and implementation of the different stages of the repair schemes, and shows metallurgical and mechanical characteristics of the repaired regions of the component.
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Harmon, Natalie, Alicia Cruz-Uribe, and Jesse Walters. "Distribution of First Row Transition Elements in Eclogites." In Goldschmidt2020. Geochemical Society, 2020. http://dx.doi.org/10.46427/gold2020.956.

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Matsukawa, Kazuhito, Koun Shirai, and Hiroshi Katayama-Yoshida. "Gettering Mechanism of 3d Transition Metals Studied by First Principles Calculation." In PHYSICS OF SEMICONDUCTORS: 28th International Conference on the Physics of Semiconductors - ICPS 2006. AIP, 2007. http://dx.doi.org/10.1063/1.2729850.

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Spichkin, Y. I. "Magnetocaloric Effect at the Field-Induced First Order Transition in Rare Earth Metals and Alloys." In ADVANCES IN CRYOGENIC ENGINEERING: Transactions of the International Cryogenic Materials Conference - ICMC. AIP, 2004. http://dx.doi.org/10.1063/1.1774545.

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Zhang, Yuqin, Guoying Feng, and Shouhuan Zhou. "A first-principles study of the transition metals doped ZnSe crystal synthesized by vapor phase thermal diffusion method." In SPIE Nanoscience + Engineering, edited by Ganapathi S. Subramania and Stavroula Foteinopoulou. SPIE, 2016. http://dx.doi.org/10.1117/12.2236152.

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9

Lin, Zhibin, and Leonid V. Zhigilei. "The Role of Thermal Excitation of D Band Electrons in Ultrafast Laser Interaction With Noble (Cu) and Transition (Pt) Metals." In 2007 First International Conference on Integration and Commercialization of Micro and Nanosystems. ASMEDC, 2007. http://dx.doi.org/10.1115/mnc2007-21076.

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The temperature dependences of the electron heat capacity and electron-phonon coupling factor for noble (Cu) and transition (Pt) metals are investigated based on the electron density of states (DOS) obtained from ab initio electronic structure calculations. For Cu, d band electrons could be thermally excited when the electron temperature exceeds ∼3000 K, leading to a significant increase, up to an order of magnitude, in the electron-phonon coupling factor and strong enhancement of the electron heat capacity away from the linear dependence on the electron temperature, which is commonly used in most of the current computational and theoretical investigations of ultrafast laser interactions with metals. Opposite to the case in Cu, the thermal excitation of d band electrons in Pt leads to a monotonic decrease of the electron-phonon coupling factor and contributes to significant negative deviations of the electron heat capacity from the linear dependence in the range of electron temperatures that are typically realized in ultrafast laser material processing applications. Strong and drastically different temperature dependences of the thermophysical properties predicted for Cu and Pt point to the importance of the electron DOS effects and the necessity of full consideration of thermal excitation of d band electrons for realistic modeling of short pulse laser interaction with noble and transition metals.
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Wallington, David W., and Fred A. Davis. "AN EXPERIMENTAL STUDY OF THE EFFECT OF AL CONCENTRATION IN CLINOPYROXENE ON PARTITION COEFFICIENTS OF THE FIRST-ROW TRANSITION ELEMENTS." In 54th Annual GSA North-Central Section Meeting - 2020. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020nc-347823.

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Reports on the topic "First Row Transition Metals"

1

Daum, Jaimie Kay. First Row Transition Metal Adsorption on Actinide Resin. Office of Scientific and Technical Information (OSTI), July 2015. http://dx.doi.org/10.2172/1207746.

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Norton, Jack. The Activation of Hydrogen by First-Row Transition-Metal Complexes. Office of Scientific and Technical Information (OSTI), March 2020. http://dx.doi.org/10.2172/1604425.

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Morabito, Matthew P., and Suljo Linic. Oxygen chemistry on transition metals : first principles DFT and Monte Carlo studies. Office of Scientific and Technical Information (OSTI), October 2012. http://dx.doi.org/10.2172/1055876.

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