Готові списки джерел за темами / Metal thiolates

Добірка наукової літератури з теми "Metal thiolates"

Автор: Grafiati
Опубліковано: 6 вересня 2023

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Статті в журналах з теми "Metal thiolates"

1

TYAPOCHKIN, EDUARD M., and EVGUENII I. KOZLIAK. "Interactions of cobalt tetrasulfophthalocyanine with thiolate anions in dimethylformamide." Journal of Porphyrins and Phthalocyanines 05, no. 04 (April 2001): 405–14. http://dx.doi.org/10.1002/jpp.341.

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Thiolate complexes of cobalt tetrasulfophthalocyanine ( CoTSPc ), possible intermediates of the industrial removal of mercaptans from oil fractions (Merox process), were studied in dimethylformamide, dimethylsulfoxide, and other polar aprotic solvents by UV-vis, 1 H NMR, and ESR spectroscopy. All thiolates react with Co II TSPc under anaerobic conditions with 1:1 stoichiometry. All tested aliphatic thiolates, regardless of their basicity, reduce Co II TSPc to form Co I TSPc derivatives. Low-basicity thiolates also form unstable non-reduced ( RS -) Co II TSPc complexes as dead-end products. Indirect kinetic evidence was obtained for electron transfer from the axial ligand to metal via the phthalocyanine equatorial ligand. 1 H NMR and binding studies revealed sulfur–cobalt interactions in the Co I TSPc product, thus indicating an axial ligand attachment to Co I TSPc . Low-basicity aromatic thiolates (pentachloro- and pentafluorobenzenethiolate) form ( RS -) Co II TSPc complexes, which are stable toward intramolecular metal reduction. This effect is indicative of possible π-stacking between the aromatic thiolate and phthalocyanine ring.
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2

NAVID, ALI, EDUARD M. TYAPOCHKIN, CHARLES J. ARCHER, and EVGUENII I. KOZLIAK. "UV-vis and Binding Studies of Cobalt Tetrasulfophthalocyanine–Thiolate Complexes as Intermediates of the Merox Process." Journal of Porphyrins and Phthalocyanines 03, no. 07 (October 1999): 654–66. http://dx.doi.org/10.1002/(sici)1099-1409(199908/10)3:6/7<654::aid-jpp189>3.0.co;2-l.

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Intermediates of the cobalt tetrasulfophthalocyanine ( CoTSPc )-catalyzed thiol autoxidation were studied by UV-vis spectroscopy. All thiolates react with CoTSPc resulting in the formation of 1:1 complexes. Three major factors control both the stability and aggregation of the complexes: thiolate basicity, metal-to-ligand charge transfer (MLCT) and π stacking. Basic thiolates partially reduce C oII TSPc , whereas CoTSPc complexes with low-basicity aliphatic thiolates ( p K a < 4) do not exhibit Co (II) reduction, based on the absence of the characteristic Co (I) charge transfer band at 450 nm. CoTSPc complexes with aliphatic and bulky aromatic thiolates appear to be aggregated in aqueous solutions and are characterized by a broad band at 650 nm. Non-bulky aromatic thiolates of low basicity ( p K a < 6) form unique stable monomeric Co II TSPc complexes. This unique spectral feature can be attributed to π stacking between the phthalocyanine ring and thiolate. Comparison of binding constants shows that the partial reduction of Co (II) significantly contributes to the thiolate binding. A combination of aromatic π stacking and MLCT appears to be responsible for the observed 1000-fold stronger binding of non-basic aromatic thiolates as compared with aliphatic ligands of similar basicity. Kinetic studies confirm the importance of the thiolate binding type for catalysis.
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3

Wark, Teresa A., та Douglas W. Stephan. "Rhodium induced titanium–sulfur bond cleavage: crystal and molecular structure of ((COD)Rh(μ-SMe))2". Canadian Journal of Chemistry 68, № 4 (1 квітня 1990): 565–69. http://dx.doi.org/10.1139/v90-086.

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Reactions of Ti(III) and Ti(IV) thiolates with Rh complexes have been investigated. In the reaction of Cp2Ti(SMe)2 and [(COD)2Rh]BF4 or [(COD)Rh(sol)2]PF6, thiolate abstraction yields ((COD)Rh(μ-SMe))2, 1. Reaction of (Cp2Ti(μ-SMe))2 with ((COD)Rh(μ-Cl))2 results in ligand exchange affording (Cp2Ti(μ-Cl))2 and 1. The complex 1 crystallizes in the monoclinic space group P21/n, with a = 8.551(2) Å, b = 10.058(3) Å, c = 22.187(4) Å, β = 92.54(1)°, Z = 4, and V = 1906(1) Å3. The structural data show a relatively short approach between the Rh centres (2.948 Å) and between the bridging sulfur atoms (2.888 Å). The implications of these structural features in terms of metal–metal and sulphur–sulfur bonding are discussed. In addition, the implications of these results with respect to the formation of thiolato-bridged, early–late heterobimetallics is considered. Keywords: thiolate abstraction, rhodium thiolate bridged dimer.
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4

Weigand, Wolfgang. "Metallkomplexe mit funktionalisierten Schwefelliganden, I / Metal Complexes of Functionalized Sulphur Containing Ligands, I." Zeitschrift für Naturforschung B 46, no. 10 (October 1, 1991): 1333–37. http://dx.doi.org/10.1515/znb-1991-1010.

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Complexes of the types cis-L2PtCl2 (L = PPh3, 1/2 dppe) and cpRu(PPh3)2Cl react with 1-alkyne-1-thiolates to give the products trans-(Ph3P)2Pt(S–C≡C–Ph)2 (5), dppePt(S–C≡C–Ph)2 (6) and CpRu(PPh3)2(S–C≡C–Ph) (7), respectively. CpRu(PPh3)(CO)(S–C≡C–Ph) (8) is formed by reaction of 7 in an atmosphere of CO. The 2-propene-1-thiolato complexes dppePt(S–CH2–CH = CH2)2 (9), CpFe(CO)2(S–CH2–CH=CH2) (12) and CpFe(PPh3)(CO)(S–CH2–CH=CH2) (13) are obtained from dppePtCl2, CpFe(CO)2I, CpFe(PPh3)(CO)I and lithium or sodium 2-propene-1-thiolate. The complexes are characterized by IR and 1H,13C and 31P NMR spectroscopy.
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5

Stephan, Douglas W., and T. Timothy Nadasdi. "Early transition metal thiolates." Coordination Chemistry Reviews 147 (January 1996): 147–208. http://dx.doi.org/10.1016/0010-8545(95)01134-x.

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6

Ungor, Dékány, and Csapó. "Reduction of Tetrachloroaurate(III) Ions With Bioligands: Role of the Thiol and Amine Functional Groups on the Structure and Optical Features of Gold Nanohybrid Systems." Nanomaterials 9, no. 9 (August 29, 2019): 1229. http://dx.doi.org/10.3390/nano9091229.

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In this review, the presentation of the synthetic routes of plasmonic gold nanoparticles (Au NPs), fluorescent gold nanoclusters (Au NCs), as well as self-assembled Au-containing thiolated coordination polymers (Au CPs) was highlighted. We exclusively emphasize the gold products that are synthesized by the spontaneous interaction of tetrachloroaurate(III) ions (AuCl4¯) with bioligands using amine and thiolate derivatives, including mainly amino acids. The dominant role of the nature of the applied reducing molecules as well as the experimental conditions (concentration of the precursor metal ion, molar ratio of the AuCl4¯ ions and biomolecules; pH, temperature, etc.) of the syntheses on the size and structure-dependent optical properties of these gold nanohybrid materials have been summarized. While using the same reducing and stabilizing biomolecules, the main differences on the preparation conditions of Au NPs, Au NCs, and Au CPs have been interpreted and the reducing capabilities of various amino acids and thiolates have been compared. Moreover, various fabrication routes of thiol-stabilized plasmonic Au NPs, as well as fluorescent Au NCs and self-assembled Au CPs have been presented via the formation of –(Au(I)-SR)n– periodic structures as intermediates.
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7

Ogata, Hideaki, Koji Nishikawa, and Wolfgang Lubitz. "Observation of a metal-hydride in [NiFe] hydrogenase." Acta Crystallographica Section A Foundations and Advances 70, a1 (August 5, 2014): C1212. http://dx.doi.org/10.1107/s2053273314087877.

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Hydrogenases catalyze the reversible hydrogen oxidation process by cleaving dihydrogen heterolytically.(1) For this reaction, the enzyme uses the transition metals Ni and Fe, which are abundant in Nature. Standard [NiFe] hydrogenaes are mainly composed of two subunits (total ~90 kDa) The [NiFe] active site is located in the center of the molecule. The active site of [NiFe] hydrogenase is composed of the dinuclear Ni-Fe center, where the Fe ion is coordinated by non-protein ligands (1CO and 2CN¯ ). Two thiolates of cysteine residues are bridging both metals. Furthermore, the Ni is coordinated to the two thiolates of cysteine residues in a terminal fashion. A third bridging ligand is found between the Ni and Fe atom, depending on the redox state.(1) In the inactive form, a third bridging ligand (OH¯¯¯ ) is found between Ni and Fe. Once the enzyme is activated, the bridging position is supposed to be vacant or bridged by a hydride. A previous X-ray crystallographic study at 1.4 Å resolution revealed that the bridging ligand (OH) is removed upon H2 reduction.(2) Electron paramagnetic resonance (EPR) spectroscopy showed that a hydride is located in the bridge between Ni and Fe, which is lost upon illumination at cryogenic temperature.(3) Here we present a crystallographic analysis of the fully reduced (Ni-R) state of [NiFe] hydrogenase from Desulfovibrio vulgaris Miyazaki F at 0.89 Å resolution. The ultra-high resolution analysis revealed the presence of the hydride bridge at the NiFe active site in the catalytically active state. Furthermore the CO and CN ligands could be identified and a protonated thiolate sulfur ligand of the Ni is postulated based on the electron density.
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8

STEPHAN, D. W., and T. T. NADASDI. "ChemInform Abstract: Early Transition-Metal Thiolates." ChemInform 27, no. 28 (August 5, 2010): no. http://dx.doi.org/10.1002/chin.199628302.

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Alharthi, Nahed S., Haroon Khan, Fahad Jibran Siyal, Zahid Ali Shaikh, Shumaila Parveen Arain, Lienda Bashier Eltayeb, and Altaf Ali Mangi. "Glutathione, Cysteine, and D-Penicillamine Role in Exchange of Silver Metal from the Albumin Metal Complex." BioMed Research International 2022 (August 8, 2022): 1–10. http://dx.doi.org/10.1155/2022/3619308.

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The purpose of this study is to investigate the exchange reaction taking place among the bovine serum albumin (BSA), 5,5 ′ -dithiobis-(2-nitrobenzoic acid (ESSE), reduced glutathione, N-acetylcysteine, D-penicillamine (thiolates), and silver metal (AgI). For this purpose, stock solutions of BSA and Ellman’s reagent were prepared by dissolving 264 mg of BSA in 5 ml of reaction buffer (0.1 M KH2PO4 at pH 7.8) and 23.8 mg of ESSE in 1.0 ml of reaction buffer which were mixed together. Mixture of BSA-AgI was prepared in a separate procedure by dissolving 0.17 mg of silver nitrate in 1 ml of reaction buffer and then dissolving BSA (200 mg) in the same solution of silver nitrate. Blocking of Cys-34 of BSA with AgI was confirmed by treating different dilutions of BSA-AgI (500 μM) solutions with the solutions of ESSE (85 μM) and ES- (85 μM) and recording the spectra (300-450) with a UV-visible spectrophotometer. The chromatographed AgI-modified BSA ((BSA-S)AgI)) samples (typically 500 μM) were subsequently mixed with thiolates (reduced glutathione, N-acetylcysteine, and D-penicillamine). AgI and modified BSA (typically 500 μM each) were treated with these low molecular weight thiolates and allowed to react overnight followed by chromatographic separation (Sephadex G25). The redox reactions of AgI-modified BSA with various low molecular weight thiols revealed a mechanically important phenomenon. In the case of reduced glutathione and N-acetylcysteine, we observed the rapid release of a commensurate amount of Ellman’s anion, indicating that an exchange has taken place and low molecular weight thiols (RSH) substituted AgI species at the Cys-34 of BSA eventually forming disulfide (BSA-SSR) at Cys-34. It can be anticipated from the phase of study involving bovine serum albumin that low molecular weight thiolates (reduced glutathione and N-acetylcysteine) take off AgI which are attached to proteins elsewhere in the physiological system, making these toxic metals free for toxic action.
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10

Templeton, D. M., P. A. W. Dean, and M. G. Cherian. "The reaction of metallothionein with mercuribenzoate. A dialysis and 113Cd-n.m.r. study." Biochemical Journal 234, no. 3 (March 15, 1986): 685–89. http://dx.doi.org/10.1042/bj2340685.

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Reaction of rat liver cadmium-metallothionein-II(Cd-MT-II) with p-hydroxymercuribenzoate(pHOHgBzO-) causes displacement of bound Cd. When pHOHgBzO- -induced displacement of 109Cd is observed after dialysis of the reaction mixture, the stoichiometry is consistent with stepwise displacement of tetraco-ordinate Cd atoms by non-random entry of reagent into the polynuclear clusters. 113Cd n.m.r. allows direct observation of the effects on bound Cd of stepwise titration of 113Cd-MT-II with pHOHgBzO-. The first equivalent reduces all resonances approximately equally. Subsequently differential reactivity of the protein thiolates towards the reagent gives rise to differential decreases in the 113Cd signal intensities. Resonances previously attributed to a three-metal cluster are lost before those arising from the four-metal cluster. These results are interpreted in terms of current models of the MT structure. They are distinct from the results of reaction of MT with 5,5′-dithiobis-(2-nitrobenzoic acid), which distinguishes between only two classes of thiolates, terminal and bridging. Such different patterns of reactivity of the protein thiolates may underlie a biological activity of this protein.
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Дисертації з теми "Metal thiolates"

1

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.

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2

Watson, 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.

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3

Wilker, 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.

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4

Shahin, Zahraa. "Au25(SR)18 gold thiolate clusters and metal organic frameworks in catalytic transformations." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSE1195/document.

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Ce projet concerne la synthèse et caractérisation de nouveaux matériaux composites à base de nanoclusteurs de thiolates d’or Au25(SR)18 (tGNCs), supportés sur divers polymères de coordination (MOFs), ainsi que sur ZrO2. L’activité catalytique de ces matériaux a été évaluée sur la transformation de différents substrats. Les tGNCs sont des matériaux atomiquement bien définis et connus pour être actifs dans des réactions d’oxydation. Les nanoparticules de MOFs sont des matériaux pouvant servir de support pour des tGNCs avec de bonnes dispersions. Certains MOFs sont connus pour avoir des propriétés acides et peuvent être actifs en catalyse. Parmi eux, MIL-101 (Cr), UiO-66 (Zr) et ZIF-8 (Zn) on été choisis en raison de leur propriétés acides et/ou de stabilité thermique. La synergie entre les tGNCs et les MOFs a été évaluée à travers la conversion catalytique de différents substrats tels le glucose, le fructose, l’alcool benzylique et le furfural, impliquant des étapes nécessitant un caractère acide et/ou oxydant. Globalement, il n’a pas été observé d’impact de la présence d’or sur la réactivité de ces substrats, et les tendences catalytiques sont celles obtenues avec les MOFs seuls. Cela est certainement dû à la stabilité thermique non suffisante des MOFs qui prévient une calcination efficace des tNGCs. Lorsque ces clusters sont déposés sur ZrO2, il a été possible de les calciner à différentes températures pour étudier l’effet du ligand et de la taille de particules, pour des réactions d’oxydation en phase liquide. Ainsi, il a été montré par exemple que la température de calcination a un impact significatif sur le comportement catalytique de ces composites, qui ont donné de bonnes activités pour l’oxydation de l’alcool benzylique en benzaldéhyde dans le toluène et en conditions douces, et pour l’esterification oxydante du furfural en furoate de méthyle
This 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
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5

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.

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6

Marsh, 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.

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7

Zheng, 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.

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8

Lu, 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.

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9

Spence, Malcolm Andrew. "Organometallic thiolate complexes of the early transition metals." Thesis, Heriot-Watt University, 1998. http://hdl.handle.net/10399/1117.

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10

Cranswick, 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.

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The research outlined in this dissertation focuses on understanding the role of metal-sulfur interactions as applied to bioinorganic and organometallic systems. This metal-sulfur interaction is analyzed using both gas-phase photoelectron spectroscopy (PES) and density functional theory (DFT). Gas-phase photoelectron spectroscopy is the most direct probe of electronic structure and is used in these studies to probe the molecular orbital energy levels of these model compounds, giving rise to an understanding of the metal and sulfur orbital interactions and characters (i.e. is an orbital primarily metal or sulfur based). Using density functional theory, orbital energies, overlap, and characters can be calculated and complement the PES experiments allowing for a detailed understanding of the electronic structure. The first part of my dissertation explains the design and implementation of a dual source gas-phase ultraviolet/X-ray photoelectron spectrometer (UPS/XPS). This gas-phase UPS/XPS can be used to quantify the bonding/antibonding character of frontier molecular orbitals, with specific applications to metal-sulfur interactions, allowing for a thorough analysis of the metal-sulfur interaction. The second part of the dissertation explores using model complexes, of the type Cp₂V(dithiolate) (where Cp is cyclopentadienyl and dithiolate is 1,2-ethenedithiolate or 1,2-benzenedithiolate), along with PES and DFT calculations to investigate the role of the pyranopterindithiolate cofactor and the d¹ electron configuration in modulating the redox potential and electron transfer in the active sites of molybdenum enzymes. This study shows that the d¹ electronic configuration offers a low energy electron transfer pathway for the reoxidation of the active site molybdenum center. The third part of the dissertation explores the use of model compounds that specifically focus on iron-thiolate interactions in biological systems, and the effect of electronic energy matching and sterics on the oxidation potential of this interaction. This study has shown that the metal-sulfur interaction is sensitive to the orientation of the thiolate ligand, and that during oxidation an “electronic-buffering effect” makes assigning a formal oxidation state to the metal center almost meaningless. All of these studies illustrate how the thiolate ligand can modulate the electron density and oxidation potential of the metal-sulfur interaction and the implication of this interaction to biological electron transfer.
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Книги з теми "Metal thiolates"

1

J, Stillman M., Shaw C. Frank, and Suzuki Kazuo T, eds. Metallothionein: Synthesis,structure and properties of metallothionein phytochelatins,and metal-thiolate complexes. Weinheim: VCH, 1992.

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2

J, Stillman Martin, Shaw C. Frank, and Suzuki Kazuo T, eds. Metallothionein: Synthesis, structure, and properties of metallothioneins, phytochelatins, and metal-thiolate complexes. New York: VCH Publishers, 1992.

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3

Schussel, Leonard J. Synthesis and oxidation of metal-thiolate compounds which mimic the active site function of thiolate dioxygenase enzymes. 1987.

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4

(Editor), Martin J. Stillman, C. Frank, III Shaw (Editor), and Kazuo T. Suzuki (Editor), eds. Metallothioneins: Synthesis, Structure and Properties of Metallothioneins, Phytochelatins and Metal-Thiolate Complexes. Wiley-VCH, 1992.

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5

Britton, Amanda M. Complexes of heterocyclic thiones and thiolates with Nickel (II) and the platinum metals. 1988.

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Частини книг з теми "Metal thiolates"

1

Kägi, Jeremias H. R., Yutaka Kojima, Margrit M. Kissling, and Konrad Lerch. "Metallothionein: An Exceptional Metal Thiolate Protein." In Ciba Foundation Symposium 72 - Sulphur in Biology, 223–37. Chichester, UK: John Wiley & Sons, Ltd., 2008. http://dx.doi.org/10.1002/9780470720554.ch14.

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2

Contakes, Stephen M., Yen Hoang Le Nguyen, Harry B. Gray, Edith C. Glazer, Anna-Maria Hays, and David B. Goodin. "Conjugates of Heme-Thiolate Enzymes with Photoactive Metal-Diimine Wires." In Photofunctional Transition Metal Complexes, 177–203. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/430_2006_039.

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3

Weser, Ulrich. "Structral and Functional Aspects of Metal-Thiolate Centres in Metallothionein." In Experientia Supplementum, 219–26. Basel: Birkhäuser Basel, 1987. http://dx.doi.org/10.1007/978-3-0348-6784-9_15.

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4

Tatsumi, Kazuyuki, and Hiroyuki Kawaguchi. "Carbon—Sulfur Bond Cleavage of Thiolates on Electron-Deficient Transition Metals." In ACS Symposium Series, 336–47. Washington, DC: American Chemical Society, 1996. http://dx.doi.org/10.1021/bk-1996-0653.ch021.

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5

Wright, Jeffrey G., Michael J. Natan, Frederick M. MacDonnel, Diana M. Ralston, and Thomas V. O'Halloran. "Mercury(II)-Thiolate Chemistry and the Mechanism of the Heavy Metal Biosensor MerR." In Progress in Inorganic Chemistry, 323–412. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470166390.ch6.

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6

Vašák, M., J. Overnell, and M. Good. "Spectroscopic and Chemical Approaches to the Study of Metal-Thiolate Clusters in Metallothionein (MT)." In Experientia Supplementum, 179–89. Basel: Birkhäuser Basel, 1987. http://dx.doi.org/10.1007/978-3-0348-6784-9_11.

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7

Pardasani, R. T., and P. Pardasani. "Magnetic properties of mixed-metal (Fe3-Cu) thiolate complex with a ‘truncated’ adamantane-like structure." In Magnetic Properties of Paramagnetic Compounds, 379–80. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-53971-2_192.

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8

Frazier, Richard A., Martyn C. Davies, Gert Matthijs, Clive J. Roberts, Etienne Schacht, Simon Tasker, and Saul J. B. Tendler. "The Self-Assembly and Inhibition of Protein Adsorption by Thiolated Dextran Monolayers at Hydrophobic Metal Surfaces." In Surface Modification of Polymeric Biomaterials, 117–27. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4899-1953-3_14.

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9

Tonzetich, Zachary J. "Biomimetic Metal Thiolates." In Comprehensive Coordination Chemistry III, 297–330. Elsevier, 2021. http://dx.doi.org/10.1016/b978-0-08-102688-5.00071-4.

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10

Kambe, N. "Dimerization of Metal Thiolates." In Sulfur, Selenium, and Tellurium, 1. Georg Thieme Verlag KG, 2008. http://dx.doi.org/10.1055/sos-sd-039-01016.

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Тези доповідей конференцій з теми "Metal thiolates"

1

Mitra, S., V. K. Sharma, T. Pradeep, M. Johnson, R. Mukhopadhyay, Dinesh K. Aswal, and Anil K. Debnath. "Chain Melting In Alkanethiol Protected Nano-Metal Clusters And Layered Thiolates." In INTERNATIONAL CONFERENCE ON PHYSICS OF EMERGING FUNCTIONAL MATERIALS (PEFM-2010). AIP, 2010. http://dx.doi.org/10.1063/1.3530521.

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2

Leung, M. k., Ziyu Cheng, and Wenguang Fan. "Thiolate Capped Noble Metal Particles as Novel Sensitizers for Solar Cells." In ISES Solar World Congress 2015. Freiburg, Germany: International Solar Energy Society, 2016. http://dx.doi.org/10.18086/swc.2015.04.27.

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3

Li, Guang-Yan, Da-Tian Fu, and Xiu-Lan Cai. "Thiolate Complexes Catalyst in Noble-Metal-Free System for Light-driven Hydrogen Production." In 4th 2016 International Conference on Material Science and Engineering (ICMSE 2016). Paris, France: Atlantis Press, 2016. http://dx.doi.org/10.2991/icmse-16.2016.5.

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4

Si, Xiuhua, Sungmin Youn, and Jinxiang Xi. "Reducing Scale Deposition by Surface Modification and Magnetic Water Treatment." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-12796.

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Анотація:
Scale deposition (or fouling) on metal surfaces from salt-containing water considerably reduces the efficiency and performance of heat transfer equipments. In industrial practices, scale deposition could be reduced through physical or chemical methods. However, in some cases chemical methods are unpractical due to cost and contamination issues, rendering the physical methods the only feasible options. The objective of this study was to evaluate the effectiveness of two physical treatments in reducing scale depositions. One is to decrease the surface energy of the heat exchanger wall through surface modification; the other one is to change the crystallography of the small solid particles formed in the solution by applying a magnetic field. For the first method, the scale deposition on PTFE surfaces, SAMs (self-assembly monolayers) surfaces, polished copper surfaces, and polished stainless steel surfaces are investigated respectively. Copper and stainless steel surfaces were modified by micro-scale (μm thickness) PTFE (Poly-Tetrofluorethylene) films and nano-scale (nm thickness) thiolate SAMs. The surface energy of PTFE films and SAMs layers based on copper and stainless steel were significantly reduced compared with the untreated metal surfaces. To study the magnetic treatment effect on the formation of the calcium carbonate scale, a magnetic field up to 0.6 T was implemented in a simulated recirculation cooling water system. A large number of experiments were performed to study the effects of fluid velocity, heat flux, and the bulk concentration of the solution on the fouling rate and induction period of calcium carbonate on various modified surfaces. The experiments showed that the formation rate of the calcium carbonate scale was decreased on modified surfaces and the induction period was prolonged with the decrease of the surface energy. The study also showed that the nucleation and nucleate growth of calcium carbonate particles were enhanced through magnetic water treatment. In addition, using a higher flow rate and/or filtration of suspended calcium carbonate particles achieves a longer induction period.
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5

Si, Xiuhua, Jinxiang Xi, and Xihai Tao. "The Study of Calcium Carbonate Scaling on Low Energy Surfaces." In 2010 14th International Heat Transfer Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ihtc14-22058.

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Анотація:
Scale deposition on heat transfer surfaces from water containing dissolved salts reduces the efficiency and performance of heat transfer equipments considerably. Scale deposition could be reduced through physical or chemical methods. In some cases, chemical methods are unacceptable, due to cost, contamination issues, etc. In these cases, physical methods are the only acceptable choices. Surface energy of the heat exchanger has been thought to be one important factor affecting the growth of fouling. Applying low energy surfaces to reduce scaling deposition is one of the effective physical methods. The formation and the characteristics of the calcium carbonate scaling on low energy surfaces have been studied in this paper. Copper and stainless steel surfaces were modified by micro-scale (μm thickness) PTFE (Poly-Tetrofluorethylene) films and nano-scale (nm thickness) thiolate SAMs (Self-Assembly Monolayers). The resulting surface energy of PTFE films and SAMs layers based on copper and stainless steel were significantly reduced compared with the original metal surfaces. To study the formation of the calcium carbonate scale, a recirculation cooling water system was used. The formation of the calcium carbonate scale on PTFE surfaces, SAMs surfaces, polished copper surfaces, and polished stainless steel surfaces were investigated respectively. The rate of calcium carbonate scale formation was decreased and the induction period was prolonged with the decrease of the heat transfer surface energy. The characteristics of the calcium carbonate scale formed on heat transfer surfaces with different surface energies was analyzed with fractal theory after taking photos with SEM (Scanning Electron Microscope). The fractal dimension values of the calcium carbonate scale on different heat transfer surfaces with different surface energies were calculated. The results showed that the fractal dimension values of calcium carbonate scale formed on lower energy PTFE and Cu-SAMs surfaces were greater than those that formed on higher energy Cu and stainless steel surfaces. Results of this study clearly indicated that the formation of calcium carbonate scaling on lower energy heat transfer surfaces is reduced.
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