Bibliographies thématiques / Mixed metal thiolates

Littérature scientifique sur le sujet « Mixed metal thiolates »

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Publié le 6 septembre 2023

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Articles de revues sur le sujet "Mixed metal thiolates"

Alharthi, Nahed S., Haroon Khan, Fahad Jibran Siyal, Zahid Ali Shaikh, Shumaila Parveen Arain, Lienda Bashier Eltayeb et Altaf Ali Mangi. « Glutathione, Cysteine, and D-Penicillamine Role in Exchange of Silver Metal from the Albumin Metal Complex ». BioMed Research International 2022 (8 août 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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Krüger, Thomas, Bernt Krebs et Gerald Henkel. « [Ni4(SC3H7)8Br] and[Ni4(SC3H7)8I] : Mixed Valent Nickel Thiolates with Integral and Nonintegral Metal Oxidation States ». Angewandte Chemie International Edition in English 31, n^o 1 (janvier 1992) : 54–56. http://dx.doi.org/10.1002/anie.199200541.

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R. S., Vishwanath, et Sakthivel Kandaiah. « Metal ion-containing C3N3S3coordination polymers chemisorbed to a copper surface as acid stable hydrogen evolution electrocatalysts ». Journal of Materials Chemistry A 5, n^o 5 (2017) : 2052–65. http://dx.doi.org/10.1039/c6ta08469a.

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We present here the preparation of a novel chemically immobilized mixed-metal ion-containing triazine thiolate (C₃N₃S₃) polymer electrocatalyst (M–TCA) on a copper (Cu) surface.

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Seela, Jeffrey L., Kirsten Folting, Ru Ji Wang, John C. Huffman, George Christou, Hsiu Rong Chang et David N. Hendrickson. « Manganese(III) thiolate chemistry : new structural types, including the first mixed-valence metal thiolate ». Inorganic Chemistry 24, n^o 26 (décembre 1985) : 4454–56. http://dx.doi.org/10.1021/ic00220a005.

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Vazquez, F., et M. Vasák. « Comparative 113Cd-n.m.r. studies on rabbit 113Cd7-, (Zn1,Cd6)- and partially metal-depleted 113Cd6-metallothionein- 2a ». Biochemical Journal 253, n^o 2 (15 juillet 1988) : 611–14. http://dx.doi.org/10.1042/bj2530611.

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Rabbit 113Cd7-metallothionein-2a (MT) contains two metal-thiolate clusters of three (cluster B) and four (cluster A) metal ions. The 113Cd-n.m.r. spectrum of 113Cd6-MT, isolated from 113Cd7-MT upon treatment with EDTA, is similar to that of 113Cd7-MT, but the cluster B resonances are lower in intensity, suggesting its co-operative metal depletion. (Zn1,113Cd6)-MT, formed upon addition of the Zn(II) ions to 113Cd6-MT, shows 113Cd-n.m.r. features characteristic of cluster B populations containing both Cd(II) and Zn(II) ions. The overall intensity gain of the mixed cluster B resonances per Cd as to those in 113Cd6- and 113Cd7-MT suggests a stabilization effect of the bound Zn(II) ions upon the previously established intramolecular 113Cd exchange within this cluster.

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Salorinne, Kirsi, Renee W. Y. Man, Paul A. Lummis, Maryam Sabooni Asre Hazer, Sami Malola, Jacky C. H. Yim, Alex J. Veinot et al. « Synthesis and properties of an Au6 cluster supported by a mixed N-heterocyclic carbene–thiolate ligand ». Chemical Communications 56, n^o 45 (2020) : 6102–5. http://dx.doi.org/10.1039/d0cc01482f.

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Grützmacher, Hansjörg, Matthias Steiner, Hans Pritzkow, Laszlo Zsolnai, Gottfried Huttner et Angelika Sebald. « Mixed amide thiolate complexes of zinc with low coordination number at the metal atom ». Chemische Berichte 125, n^o 10 (octobre 1992) : 2199–207. http://dx.doi.org/10.1002/cber.19921251006.

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Sanambatla, Vanitha, Sathish Kumar Nara, Balaji Hari, Varada Reddy Ammireddy et Saritha Nimmakayala. « Antimicrobial and antioxidant studies of Schiff base, 2-(2-hydroxy-2-methyl-1-phenylpropylidene) hydrazine carbothioamide and its mixed ligand cd (II) complexes ». Journal of medical pharmaceutical and allied sciences 11, n^o 1 (30 janvier 2022) : 4470–76. http://dx.doi.org/10.55522/jmpas.v11i1.2451.

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New mononuclear mixed ligand Cadmium(II) complexes of the type [Cd(L)(diimine)] (1,2) [where L = 2-(2-hydroxy-2-methyl-1-phenylpropylidene)hydrazinecarbothioamide; diimine = 2,2’-bipyridine (1), 1,10-phenanthroline (2)] have been synthesized and characterized by spectroscopic techniques such as FT-IR, UV-Visible, and1H and 13CNMR Spectroscopy. From the investigations of spectral data, it is evident that the heterocyclic bases (2,2’-bipyridine and 1,10-Phenanthroline) act as neutral bidentate ligand coordinating to the metal ion through two nitrogen donor atoms addition to azomethane nitrogen, thiolate Sulphur, and hydroxyl oxygen in the Schiff base ligand. The synthesized Schiff base metal chelates have been screened for their anti-microbial activities using the agar well diffusion method against different selected types of bacteria and fungi in addition to antioxidant activity. The prepared Schiff base ligand and its metal complexes exhibited good antimicrobial and antioxidant activities. The antibacterial and antifungal efficacy of Complex-1 was higher than that of all the prepared compounds. In the case of antioxidant activity, Complex-2 has stronger scavenging activity among them. Keywords: Cd (II) metal complexes, 2,2’-Bipyridine, 1,10-Phenanthroline, Antimicrobial activities.

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Dean, Philip A. W., Jagadese J. Vittal et Yuyang Wu. « Synthesis, multinuclear magnetic resonance spectra, and chemistry of some complexes [(μ-SR)6(MX)4]2− (R = alkyl ; M = Zn or Cd ; X = Cl, Br, or I) and the X-ray structural analysis of (Et4N)2[(μ-SPri)6(CdBr)4] ». Canadian Journal of Chemistry 70, n^o 3 (1 mars 1992) : 779–91. http://dx.doi.org/10.1139/v92-103.

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The self-assembly method has been used to prepare a wide range of new adamantane-like anions of the type [(μ-SR)6(MX)4]2− (M = Zn or Cd; R = alkyl or benzyl; X = Cl, Br, or I) as their Et4N+ salts. Metal (111 or 113Cd) NMR data have been measured for the cadmium complexes, and also for many of the possible mixed-metal complexes [(μ-SR)6(CdX)n(ZnX)4−n]2−. In the complexes with mixed metals, the effects of Zn substitution on the metal chemical shifts are generally larger for the alkyl- and benzyl-thiolate complexes than for related benzenethiolate complexes. However, for [(μ-SPri)6(CdX)n(CdX′)4−n]2− (X/X′ = Cl/Br, Cl/I, or Br/I), substituent effects are no larger than found in some PhS−-bridged complexes. The reaction of [(μ-SPri)6(CdX)4]2− (X = Cl, Br, or I) with E′8 (E′ = S or Se) in CH2Cl2 gives [Cd4(μ4-E′) (μ-SPri)12(CdX)4]2− as the major species detectable by metal, 13C, and, where applicable, 77Se NMR. However, the reaction does not occur stoichiometrically. The compound (Et4N)2[(μ-SPri)6(CdBr)4] crystallizes in the monoclinic space group P21/c with cell dimensions a = 24.079(3) Å, b = 11.365(2) Å, c = 22.561(3) Å, β = 113.89(1), and Z = 4. The structure was refined to R(Rw) = 0.0663(0.0703) with the use of 2669 unique data with I > 2.5σ(I). The anion contains an adamantane-type (μ2-S)6Cd4 cage composed of a nearly regular Cd4 tetrahedron and a distorted S6 octahedron, the irregularity of which is caused by 1,3-interactions of the substituent groups on the sulfur atoms. The axial or equatorial dispositions of the six alkyl groups in the four fused M3S3 rings are [aae, aae, aee, aee]. For the zinc-group elements, this is the first example of an adamantane-like (μ-Salkyl)6M4 cage that has been characterized crystallographically. Keywords: cadmium complex, cadmium-111/113 NMR, thiolate complex, X-ray analysis, zinc complex.

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Adams, H., N. A. Bailey, M. N. Bancroft, A. P. Bisson et M. J. Morris. « Phosphido-bridged dimolybdenum complexes with sulfide and thiolate ligands as precursors to mixed-metal clusters ». Journal of Organometallic Chemistry 542, n^o 1 (septembre 1997) : 131–40. http://dx.doi.org/10.1016/s0022-328x(97)00297-0.

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Plus de sources

Thèses sur le sujet "Mixed metal thiolates"

Gomes, de Lima Bernardes Miriam. « Réactivité de complexes organométalliques mono- et dinucléaires : synthèse de thiolato-composés du molybdène, du tungstène et du cobalt : étude de la formation de liaisons c-c dans la sphère de coordination du métal ». Brest, 1986. http://www.theses.fr/1986BRES2008.

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Caracterisation des complexes ((c::(5)h::(5))(co)::(2) lwc(cf::(3)) = c(cf::(3))h) et (c::(5)h::(5))(co) lwc(o)c(cf::(3)) = c(cf::(3))h) (l=co,pr::(3),p(or)::(3)) synthese de complexes dinucleaires de mo et w. L'addition oxydante de dialkylsulfure a des derives biportes de mo(ii) et w(ii) a donne lieu a la formation de complexes thiolato triportes ((c::(5)h::(5))(co)m(mu -sr)::(3)m(co)(c::(5)h::(5)))tx**(-)

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Faulmann, Christophe. « Conducteurs derives de metaux de transition : complexes moleculaires, polymeres, oxydes de cuivre ». Toulouse 3, 1988. http://www.theses.fr/1988TOU30160.

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Chapitres de livres sur le sujet "Mixed metal thiolates"

Pardasani, R. T., et P. Pardasani. « Magnetic properties of mixed-metal (Fe3-Cu) thiolate complex with a ‘truncated’ adamantane-like structure ». Dans 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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