Acceder

Bibliografías temáticas / D10 metals / Artículos de revistas

Artículos de revistas sobre el tema "D10 metals"

Siga este enlace para ver otros tipos de publicaciones sobre el tema: D10 metals.

Autor: Grafiati

Publicado: 18 de mayo de 2024

Crea una cita precisa en los estilos APA, MLA, Chicago, Harvard y otros

Elija tipo de fuente:

Consulte los 50 mejores artículos de revistas para su investigación sobre el tema "D10 metals".

Junto a cada fuente en la lista de referencias hay un botón "Agregar a la bibliografía". Pulsa este botón, y generaremos automáticamente la referencia bibliográfica para la obra elegida en el estilo de cita que necesites: APA, MLA, Harvard, Vancouver, Chicago, etc.

También puede descargar el texto completo de la publicación académica en formato pdf y leer en línea su resumen siempre que esté disponible en los metadatos.

Explore artículos de revistas sobre una amplia variedad de disciplinas y organice su bibliografía correctamente.

1

Sculfort, Sabrina y Pierre Braunstein. "Intramolecular d10–d10 interactions in heterometallic clusters of the transition metals". Chemical Society Reviews 40, n.º 5 (2011): 2741. http://dx.doi.org/10.1039/c0cs00102c.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

2

Sculfort, Sabrina y Pierre Braunstein. "ChemInform Abstract: Intramolecular d10-d10 Ineractions in Heterometallic Clusters of the Transition Metals". ChemInform 42, n.º 32 (14 de julio de 2011): no. http://dx.doi.org/10.1002/chin.201132218.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

3

Didbaridze, I. "Synthesis and Study of Tetrathioarsenates of d10-Metals". Earth Sciences 4, n.º 5 (2015): 84. http://dx.doi.org/10.11648/j.earth.s.2015040501.25.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

4

Laing, Michael. "THE KNIGHT S MOVE IN THE PERIODIC TABLE: a regularity amongst the d10 metals on the lower right-hand side". SOUTHERN BRAZILIAN JOURNAL OF CHEMISTRY 1, n.º 1 (20 de diciembre de 1993): 33–59. http://dx.doi.org/10.48141/sbjchem.v1.n1.1993.38_1993.pdf.

Texto completo

Resumen

This article describes a pattern of reactivity and properties of the d10 metals in the bottom right-hand side of the periodic table. Pairs of metals such as Zn-Sn, Cu-In, Ag-Tl, Cd-Pb, and Sn-Po, all related by the knight s move, are discussed, taking into consideration their properties, electronic configuration, and metallic state.

Los estilos APA, Harvard, Vancouver, ISO, etc.

5

Muthu, Sebastian, Zheng Ni y Jagadese J. Vittal. "Photoluminescent coordination polymers of d10 metals with 4,4′-dipyridylsulfide (dps)". Inorganica Chimica Acta 358, n.º 3 (febrero de 2005): 595–605. http://dx.doi.org/10.1016/j.ica.2004.09.038.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

6

Branzan, Ramona M. C., Jutta Kösters, Mareike C. Jahnke y F. Ekkehardt Hahn. "Oxidative addition of N-ether-functionalized 2-chlorobenzimidazole to d10 metals". Zeitschrift für Naturforschung B 71, n.º 10 (1 de octubre de 2016): 1077–85. http://dx.doi.org/10.1515/znb-2016-0137.

Texto completo

Resumen

AbstractReaction of 2-chloro-N-(methoxymethyl)benzimidazole 1 with zerovalent group 10 metal complexes in the presence of an additional proton source yielded, via an oxidative addition of the C2–Cl bond, complexes with a protic NH,NR-substituted (R=methoxymethyl) benzimidazolin-2-ylidene ligand. The oxidative addition of 1 to Ni0 and Pd0 complexes proceeded with the exclusive formation of the trans-configured complexes trans-[2]BF4 and trans-[3]BF4, respectively. Contrary to this observation, the reaction of 1 with a more substitution inert Pt0 complex leads, depending on the reaction temperature, to a mixture of cis-/trans-[4]BF4 or exclusively to trans-[4]BF4. The molecular structures of all three trans-configured complexes were determined.

Los estilos APA, Harvard, Vancouver, ISO, etc.

7

Muthu, Sebastian, John H. K. Yip y Jagadese J. Vittal. "Coordination polymers of d10 metals and N,N′-bis(3-pyridinecarboxamide)-1,2-ethane". Journal of the Chemical Society, Dalton Transactions, n.º 24 (27 de noviembre de 2001): 3577–84. http://dx.doi.org/10.1039/b105696b.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

8

Arp, Henning, Christoph Marschner, Judith Baumgartner, Patrick Zark y Thomas Müller. "Coordination Chemistry of Disilylated Stannylenes with Group 10 d10 Transition Metals: Silastannene vs Stannylene Complexation". Journal of the American Chemical Society 135, n.º 21 (16 de mayo de 2013): 7949–59. http://dx.doi.org/10.1021/ja401548d.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

9

Averkiev, Boris B., Yan Zhao y Donald G. Truhlar. "Binding energy of d10 transition metals to alkenes by wave function theory and density functional theory☆". Journal of Molecular Catalysis A: Chemical 324, n.º 1-2 (1 de junio de 2010): 80–88. http://dx.doi.org/10.1016/j.molcata.2010.03.016.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

10

Daâssi, Dalel, Afef Nasraoui Hajaji, Lama J. H. Alssulime, Shaza N. Alkhatib y Ragaa A. Hamouda. "Fungal Consortia Mediated Bio-Treatment of Organic Matter and Metals Uptake from Sewage Water: Maize Agro-Physiological Assessment". Catalysts 14, n.º 4 (12 de abril de 2024): 257. http://dx.doi.org/10.3390/catal14040257.

Texto completo

Resumen

The present investigation aims to improve the efficiency of fungal mono- and mixed cultures in removing organic pollutants and metals from sewage water (SW) for further maize plant response assessments. The reduction in the organic load from the SW was harnessed using a co-culture consortium consisting of Aspergillus niger (KB5), Sordariomycetes sp. (D10), and Coniochaetaceae sp. (LB3). The testing results had evinced removal of up to 88% of the organic matter and more than 96%, 91%, 80%, and 47.6%, of removal percentages for Copper (Cu), Nickel (Ni), Cadmium (Cd), and Lead (Pb), respectively, with the developed fungal consortium [KB5 + D10 + LB3]. After treatment and lab experiments, a reuse of treated and untreated SW for plant irrigation was evaluated towards improving maize plant growth. Irrigation was conducted in pot experiments with three types of water: clean water (Control), untreated (USW), and treated SW by fungal consortia (TSW) and by station treatment plant STP (TSWP) using the randomized complete block (RCB) experimental design. Results of the pots trial revealed that the morphological parameters of SW-irrigated plants are slightly improved compared to water-irrigated plants. Data regarding assimilating area attributes indicated that the most significant enlargement of the assimilation area was observed with TSW-D (1/4) irrigation by 1051 cm2, followed by TSWP-D (0) by 953.96 cm2, then USW-D (1/4) by 716.54 cm2, as compared to plants irrigated with clean water (506.91 cm2). On average, the assimilation areas were larger by 51.76%, 46.86%, and 29.25% in TSW, USW, and TSWP-irrigated plants, respectively. Thus, SW irrigation supports the required qualities and quantities of microelements and water for plant growth. Oxidative stress assessment showed that irrigations with treated SW caused a significant decrease in both enzymatic and non-enzymatic antioxidants, depicting that the treatment lowered the stress of sewage water.

Los estilos APA, Harvard, Vancouver, ISO, etc.

11

Pajuelo-Corral, Oier, Antonio Rodríguez-Diéguez, Jose A. García, Eider San Sebastián, Jose M. Seco y Javier Cepeda. "Chiral coordination polymers based on d10 metals and 2-aminonicotinate with blue fluorescent/green phosphorescent anisotropic emissions". Dalton Transactions 47, n.º 26 (2018): 8746–54. http://dx.doi.org/10.1039/c8dt01159a.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

12

Ford, Peter C. y Arnd Vogler. "Photochemical and photophysical properties of tetranuclear and hexanuclear clusters of metals with d10 and s2 electronic configurations". Accounts of Chemical Research 26, n.º 4 (abril de 1993): 220–26. http://dx.doi.org/10.1021/ar00028a013.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

13

Serpe, Angela, Luca Pilia, Davide Balestri, Luciano Marchiò y Paola Deplano. "Characterization and Structural Insights of the Reaction Products by Direct Leaching of the Noble Metals Au, Pd and Cu with N,N′-Dimethyl-piperazine-2,3-dithione/I2 Mixtures". Molecules 26, n.º 16 (4 de agosto de 2021): 4721. http://dx.doi.org/10.3390/molecules26164721.

Texto completo

Resumen

In the context of new efficient and safe leaching agents for noble metals, this paper describes the capability of the Me2pipdt/I2 mixture (where Me2pipdt = N,N′-dimethyl-piperazine-2,3-dithione) in organic solutions to quantitatively dissolve Au, Pd, and Cu metal powders in mild conditions (room temperature and pressure) and short times (within 1 h in the reported conditions). A focus on the structural insights of the obtained coordination compounds is shown, namely [AuI2(Me2pipdt)]I3 (1), [Pd(Me2pipdt)2]I2 (2a) and [Cu(Me2pipdt)2]I3 (3), where the metals are found, respectively, in 3+, 2+ and 1+ oxidation states, and of [Cu(Me2pipdt)2]BF4 (4) and [Cu(Me2dazdt)2]I3 (5) (Me2dazdt = N,N′-dimethyl-perhydrodizepine-2,3-dithione) compared with 3. Au(III) and Pd(II) (d8 configuration) form square–planar complexes, whereas Cu(I) (d10) forms tetrahedral complexes. Density functional theory calculations performed on the cationic species of 1–5 help to highlight the nature of the bonding in the different complexes. Finally, the valorization of the noble metals-rich leachates is assessed. Specifically, gold metal is quantitatively recovered from the solution besides the ligands, showing the potential of these systems to promote metal recycling processes.

Los estilos APA, Harvard, Vancouver, ISO, etc.

14

Pallenberg, Alexander J., Thomas M. Marschner y David M. Barnhart. "Phenanthroline complexes of the d10 metals nickel(0), zinc(II) and silver(I)—comparison to copper(I) species". Polyhedron 16, n.º 16 (enero de 1997): 2711–19. http://dx.doi.org/10.1016/s0277-5387(97)00051-x.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

15

Su, Shengqun, Chao Qin, Zhiyong Guo, Huadong Guo, Shuyan Song, Ruiping Deng, Feng Cao, Song Wang, Guanghua Li y Hongjie Zhang. "Five three/two-fold interpenetrating architectures from self-assembly of fluorene-2,7-dicarboxylic acid derivatives and d10 metals". CrystEngComm 13, n.º 8 (2011): 2935. http://dx.doi.org/10.1039/c0ce00662a.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

16

Zhu, Bao-Yong, Xiu-Ling Zhang, Feng Guo y Xin-Hua Liu. "Synthesis and characterization of four coordination polymers constructed with d10 metals and mixed flexible ligands under solvothermal conditions". Inorganica Chimica Acta 391 (agosto de 2012): 58–65. http://dx.doi.org/10.1016/j.ica.2012.04.044.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

17

FORD, P. C. y A. VOGLER. "ChemInform Abstract: Photochemical and Photophysical Properties of Tetranuclear and Hexanuclear Clusters of Metals with d10 and s2 Electronic Configurations". ChemInform 24, n.º 32 (20 de agosto de 2010): no. http://dx.doi.org/10.1002/chin.199332287.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

18

Lu, Lu, Jun Wang, Feng Chen, Lin-Tao Wei, Li-Min Lin, Bao-Hong Li, Amita Singh y Abhinav Kumar. "Structures and photocatalytic performance of two d10 metal-based coordination polymers containing mixed building units". Transition Metal Chemistry 44, n.º 2 (3 de octubre de 2018): 107–14. http://dx.doi.org/10.1007/s11243-018-0274-9.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

19

Kan, Wei-Qiu, Bo Liu, Jin Yang, Ying-Ying Liu y Jian-Fang Ma. "A Series of Highly Connected Metal–Organic Frameworks Based on Triangular Ligands and d10 Metals: Syntheses, Structures, Photoluminescence, and Photocatalysis". Crystal Growth & Design 12, n.º 5 (20 de abril de 2012): 2288–98. http://dx.doi.org/10.1021/cg2015644.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

20

Wang, Wei, Wei-Qiu Kan, Jin Yang y Jian-Fang Ma. "A series of coordination polymers assembled from d10 metals and a new multidentate N-donor ligand: syntheses, structures, and photoluminescent properties". CrystEngComm 15, n.º 19 (2013): 3824. http://dx.doi.org/10.1039/c3ce40119g.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

21

Burguera, Sergi, Rosa M. Gomila, Antonio Bauzá y Antonio Frontera. "Square Planar Pt(II) Ion as Electron Donor in Pnictogen Bonding Interactions". Inorganics 11, n.º 2 (15 de febrero de 2023): 80. http://dx.doi.org/10.3390/inorganics11020080.

Texto completo

Resumen

It has been proposed that late transition metals with low coordination numbers (square planar or linear) can act as nucleophiles and participate in σ-hole interactions as electron donors. This is due to the existence, in this type of metal complexes, of a pair of electrons located at high energy d-orbitals (dz2 or dx2-y2), which are adequate for interacting with antibonding σ-orbitals [σ*(X–Y)] where Y is usually an electron withdrawing element and X an element of the p-block. This type of d[M]→σ*(X–Y) interaction has been reported for metals of groups 9–11 in oxidation states +1 and +2 (d8 and d10) as electron donors and σ-holes located in halogen and chalcogen atoms as electron acceptors. To our knowledge, it has not been described for σ-holes located in pnictogen atoms. In this manuscript, evidence for the existence of pnictogen bonding involving the square planar Pt(II) metal as the electron donor and Sb as the electron acceptor is provided by using an X-ray structure retrieved from the Cambridge Structural Database (CSD) and theoretical calculations. In particular, the quantum theory of atoms in molecules (QTAIM), the noncovalent interaction plot (NCIPlot) and molecular electrostatic potential (MEP) methods were used. Moreover, to further confirm the nature of the Sb···Pt(II) contact, a recently developed method was used where the electron density (ED) and electrostatic potential (ESP) distribution were compared along the Sb···Pt(II) bond path.

Los estilos APA, Harvard, Vancouver, ISO, etc.

22

Cao, Liling, Min Luo, Chensheng Lin, Yuqiao Zhou, Dan Zhao, Tao Yan y Ning Ye. "From centrosymmetric to noncentrosymmetric: intriguing structure evolution in d10-transition metal iodate fluorides". Chemical Communications 56, n.º 73 (2020): 10734–37. http://dx.doi.org/10.1039/d0cc02532a.

Texto completo

Resumen

The first d¹⁰-transition metal iodate fluoride, centrosymmetric ZnIO₃F, was successfully transformed into noncentrosymmetric CdIO₃F, resulting from the asymmetric nature of the [IO₃]⁻ groups by the substitution of Zn²⁺ with Cd²⁺.

Los estilos APA, Harvard, Vancouver, ISO, etc.

23

Tang, Qun, Chun-Jing Zhang, Chun-Hua Zhang, Hui-Yuan Wang, Ya-Guang Chen y Shu-Xia Liu. "Two sandwich-type compounds from Keggin polyoxometalate, d10 metals and the product of in situ catalyzed decarboxylation of pyrazine-2,3-dicarboxylic acid". Inorganic Chemistry Communications 15 (enero de 2012): 238–42. http://dx.doi.org/10.1016/j.inoche.2011.10.035.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

24

Mendizabal, Fernando, Daniela Donoso, Claudio Olea-Azar y Raúl Mera. "Theoretical study of the interaction d10–s2 between Pt(0) and metals on the [Pt(PH3)3M] complexes (M=Hg(0), Au(-I))". Journal of Molecular Structure: THEOCHEM 803, n.º 1-3 (febrero de 2007): 39–44. http://dx.doi.org/10.1016/j.theochem.2006.09.023.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

25

Krieck, Sven, Daniel Schulze, Helmar Görls y Matthias Westerhausen. "Coordination Chemistry of N,N′-Bis(diphenylphosphanylmethyl)- 2,3-dihydro-1H-perimidine – Lewis Acid-Base Complexes with the d10-Metals Nickel(0) and Gold(I)". Zeitschrift für Naturforschung B 69, n.º 11-12 (1 de diciembre de 2014): 1299–305. http://dx.doi.org/10.5560/znb.2014-4150.

Texto completo

Resumen

Abstract The addition reactions of N,N′-bis(diphenylphosphanylmethyl)-2,3-dihydro-1H-perimidine (1) with [(cod)2Ni] and [(Ph3P)AuCl] yield yellow [(1)Ni(η4-cod)] (2) and colorless [(1)(Ph3P)AuCl]·3MeOH (3), respectively. In these transition metal complexes of nickel(0) and gold(I) 1 acts as a bidentate chelating ligand. Crystal structures of [(1)Ni(η4-cod)]·3THF (2a) and of cosolvent-free [(1)Ni(η4-cod)] (2) reveal a distorted tetrahedral environment of the nickel atom. The gold(I) atom in 3 exhibits a very long Au-Cl bond of 296.2(1) pm. In contrast to the nickel complexes, compound 3 shows strong agostic interactions between gold(I) and a methylene fragment.

Los estilos APA, Harvard, Vancouver, ISO, etc.

26

Chen, Sheng-Chun, Nan-Nan Chai, Kun-Lin Huang, Feng Tian, Juan Shi, Ming-Yang He y Qun Chen. "Microwave synthesis of 1-D, 2-D, and 3-D blue luminescent coordination polymers of d10 metals with a new rigid tris-triazole ligand". Inorganica Chimica Acta 494 (agosto de 2019): 187–93. http://dx.doi.org/10.1016/j.ica.2019.05.033.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

27

Khidirov, Irisali, Sayfiddin Rakhmanov y Sherzod Makhmudov. "DEPENDENCE OF THE QUASIELASTIC FORCE COEFFICIENT AND THE RMS AMPLITUDE OF THERMAL VIBRATIONS OF ATOMS IN D - ELEMENTS ON ATOMIC NUMBER IN GROUPS OF THE MENDLEEV PERIODIC SYSTEM". Journal of Science and Innovative Development 3, n.º 6 (29 de diciembre de 2020): 63–69. http://dx.doi.org/10.36522/2181-9637-2020-6-6.

Texto completo

Resumen

The discovered regularities are explained by the configurationally model of the electronic structure of matter as follows: in subgroups IIIa – VIIIa of groups of the periodic table in the series Ti → Ni, the orbital of d - electrons form, together with the of s-electrons orbital, hybrid orbital, the degree of intersection of which increases with an increase in the ordinal number of elements and, accordingly, the interatomic force of interaction increases. In the copper subgroup, the bond strength is largely provided by s - electrons. A decrease in the energy stability of s - electrons in the transition from Cu (copper) to gold due to an increase in the distance of s - electrons from the nucleus and the degree of screening of the nuclear charge by internal electrons leads to a decrease in the interatomic force of interaction. In metals of the zinc subgroup d10 - the valence electrons in the condensed state is violated due to the excitation of s2 - configurations with the formation of a high concentration of ant bonding unlocalized electrons, the degree of loosening of which increases with an increase in the ordinal number of the element in this subgroup. This leads to a weakening of the force of interaction of atoms with an increase in the principal quantum number of s-electrons.

Los estilos APA, Harvard, Vancouver, ISO, etc.

28

Anacona, J. R. y Adolfo Moreno. "PARAMAGNETIC COMPLEXES OF SOME d10 IONS WITH Α SCHIFF BASE LIGAND DERIVED FROM 2,3-DIAMINO-1,4-NAPHTHOQUINONE AND DIACETYLPYRIDINE: ANTIBACTERIAL STUDIES". Main Group Metal Chemistry 22, n.º 9 (enero de 1999): 573–77. http://dx.doi.org/10.1515/mgmc.1999.22.9.573.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

29

Boucher, F., M. Evain y R. Brec. "Second-order Jahn—Teller effect in CdPS3 and ZnPS3 demonstrated by a non-harmonic behaviour of Cd2+ and Zn2+ d10 ions". Journal of Alloys and Compounds 215, n.º 1-2 (noviembre de 1994): 63–70. http://dx.doi.org/10.1016/0925-8388(94)90819-2.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

30

Hupf, Emanuel, Enno Lork, Stefan Mebs y Jens Beckmann. "6-Diphenylphosphinoacenaphth-5-yl-mercurials as Ligands for d10 Metals. Observation of Closed-Shell Interactions of the Type Hg(II)···M; M = Hg(II), Ag(I), Au(I)". Inorganic Chemistry 54, n.º 4 (22 de enero de 2015): 1847–59. http://dx.doi.org/10.1021/ic502728v.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

31

Li, Peng-Fei, Chun-Li Hu, Ya-Ping Gong, Fang Kong y Jiang-Gao Mao. "Hg3(Te3O8)(SO4): a new sulfate tellurite with a novel structure and large birefringence explored from d10 metal compounds". Chemical Communications 57, n.º 57 (2021): 7039–42. http://dx.doi.org/10.1039/d1cc02494a.

Texto completo

Resumen

Four new sulfate tellurites have been found from d¹⁰ Metal–Te⁴⁺–SO₄²⁻ systems and the mercury compound, Hg₃(Te₃O₈)(SO₄), exhibits the largest birefringence among the reported metal sulfate tellurites to date.

Los estilos APA, Harvard, Vancouver, ISO, etc.

32

Priola, Emanuele, Ghodrat Mahmoudi, Jacopo Andreo y Antonio Frontera. "Unprecedented [d9]Cu⋯[d10]Au coinage bonding interactions in {Cu(NH3)4[Au(CN)2]}+[Au(CN)2]− salt". Chemical Communications 57, n.º 59 (2021): 7268–71. http://dx.doi.org/10.1039/d1cc02709c.

Texto completo

Resumen

The X-ray structure of the {Cu(NH₃)₄[Au(CN)₂]}⁺[Au(CN)₂]⁻ salt is reported showing an unprecedented [d⁹]Cu⋯[d¹⁰]Au coinage bond.

Los estilos APA, Harvard, Vancouver, ISO, etc.

33

Conejo-Rodríguez, Verónica, Marconi N. Peñas-Defrutos y Pablo Espinet. "d8⋯d10 RhI⋯AuI interactions in Rh 2,6-xylylisocyanide complexes with [Au(CN)2]−: bond analysis and crystal effects". Chemical Communications 55, n.º 34 (2019): 5005–8. http://dx.doi.org/10.1039/c9cc01377f.

Texto completo

Resumen

The well-known [RhL₄]_n(anion)_n structures, with Rh^I⋯Rh^I d⁸⋯d⁸ interactions, are replaced by others with Rh^I⋯Au^I d⁸⋯d¹⁰ interactions such as [{RhL₄}{Au(CN)₂}] (L = 2,6-xylylisocyanide) or [{RhL₄}{Au(CN)₂}{RhL₄}{Au₂(CN)₃}·4(CHCl₃)]_∞ when the anion is [Au(CN)₂]⁻.

Los estilos APA, Harvard, Vancouver, ISO, etc.

34

Teixeira, Sandra Tereza, Wanderley José de Melo y Érica Tomé Silva. "Heavy metals in a degraded soil treated with sludge from water treatment plant". Scientia Agricola 62, n.º 5 (octubre de 2005): 498–501. http://dx.doi.org/10.1590/s0103-90162005000500016.

Texto completo

Resumen

The application of water treatment sludge (WTS) to degraded soil is an alternative for both residue disposal and degraded soil reclaim. This study evaluated effects of the application of water treatment sludge to a Typic Hapludox soil degraded by tin mining in the National Forest of Jamari, State of Rondonia, Brazil, on the content of heavy metals. A completely randomized experimental design with five treatments was used: control (n = 4); chemical control, which received only liming (n = 4); and rates D100, D150 and D200, which corresponded to 100, 150 and 200 mg of N-sludge kg-1 soil (n = 20), respectively. Thirty days after liming, period in which soil moisture was kept at 70% of the retention capacity, soil samples were taken and analyzed for total and extractable Fe, Cu, Mn, Zn, Cd, Pb, Ni, and Cr. The application of WTS increased heavy-metal contents in the degraded soil. Although heavy metals were below their respective critical limits, sludge application onto degraded areas may cause hazardous environmental impact and thus must be monitored.

Los estilos APA, Harvard, Vancouver, ISO, etc.

35

Kinzel, Niklas Werner, Derya Demirbas, Eckhard Bill, Thomas Weyhermüller, Christophe Werlé, Nicolas Kaeffer y Walter Leitner. "Systematic Variation of 3d Metals in a Redox-Innocent Ligand Environment: Structures, Electrochemical Properties and CO₂ Activation". ECS Meeting Abstracts MA2022-01, n.º 49 (7 de julio de 2022): 2078. http://dx.doi.org/10.1149/ma2022-01492078mtgabs.

Texto completo

Resumen

In the endeavor to close the anthropogenic carbon cycle and produce goods in a de-fossilized future, electrochemical carbon dioxide reduction constitutes a powerful tool.[1] Herein,3d transition metal complexes range among the most effective catalysts to overcome the kinetic barriers for CO2 activation.[2] In a recent literature review, we analyzed the main reaction pathways of homogeneously catalyzed CO2 electroreduction from an organometallic perspective and classified them into two mechanisms: (1) direct coordination of carbon dioxide to the metal center prior to activation and (2) formation of a metal hydride as the intermediate reactive to CO2.[3] Although properties of the metal center such as hydricity, or substrate (CO2) and product (CO, HCO2H...) binding affinity, are crucial regarding the mechanism and the ability of the complex to mediate CO2 reduction, systematic variations of the metal within an identical, redox-innocent ligand backbone remain scarcely investigated. In this study,[4] we report on the synthesis, structures, and electrochemistry of 3d transition metal complexes (M = Mn(I), Fe(II), Co(II), Ni(II), Cu(I) and Zn(II)) coordinated by a new redox-innocent PNP pincer ligand system (Figure 1). The ligand combines a large steric demand, partially shielding the metal center, with a high degree of aromaticity. With these features, the ligand only marginally interferes in the redox processes but still takes sufficient π-backbonding to stabilize low-valent metals. The coordination compounds derived thereof were analyzed by spectroscopic methods (e.g., NMR, EPR, and Mössbauer) as well as crystal X-Ray diffraction to determine their spatial and electronic structures. These findings served as the starting point for a further exploration of the electrochemical reduction of the complexes via cyclic voltammetry. While the Mn, Cu, and Zn complexes solely exhibit ligand reduction or decomposition processes, the distinct electrochemical waves found for the Fe, Co and Ni coordination compounds could be assigned to metal-centered reduction events from M(II) down to M(0). For both cobalt and nickel, the reductions appear to be accompanied by their chloride ligands being lost or exchanged with the acetonitrile solvent, a fact that we currently investigate[5] as these phenomena remain misjudged across many (CO2) electroreduction catalysts. In contrast to Co and Ni, Fe undergoes a more complex reduction pattern likely yielding a dimeric species. Despite their unequal reduction pathways, the evolution of the voltammograms of the complexes under CO2 atmosphere indicates an interaction of each of the complexes with the substrate molecule in their reduced metal states. The d10 Ni(0) species putatively forms an Aresta-type Ni-η2-CO2 complex, in which the electron transfer to the substrate through backbonding is insufficient to enable electrocatalytic activity. At contrast, CO2 binding at the d9 Co(0) intermediate likely leads to additional electron uptake and formation of a formal Co(I) metallacarboxylate complex able to promote turnover (Figure 2). Eventually, we related our findings to the few literature precedents that incorporate redox-innocent ligands. This assessment shows that beneficial characteristics in the electrochemical activation of CO2 by complexes based on redox-innocent ligands are an unsaturated coordination sphere (coordination number = 4 or 5) as well as a d7 to d9 configuration in the reduced oxidation state (+I or 0). The on-purpose design of complexes that simultaneously meet these three characteristics hence provides a promising strategy for catalyst development. In particular, dynamic structural and electronic changes under electrochemical conditions, such as the exchange of chlorido ligands with acetonitrile as faced in this study, must be controlled to ensure the primary operation of the metal centers in the desired catalytic manifold. References [1] P. De Luna, C. Hahn, D. Higgins, S. A. Jaffer, T. F. Jaramillo, E. H. Sargent, Science 2019, 364, eaav3506. [2] R. Francke, B. Schille, M. Roemelt, Chem. Rev. 2018, 118, 4631. [3] N. W. Kinzel, C. Werlé, W. Leitner, Angew. Chem. Int. Ed. 2021, 60, 11628. [4] N. W. Kinzel,D. Demirbas, E. Bill, T. Weyhermüller, C. Werlé,N. Kaeffer, W. Leitner, Inorg. Chem. 2021, doi: 10.1021/acs.inorgchem.1c02909. [5] N. W. Kinzel, N. Kaeffer, W. Leitner in preparation. Figure 1

Los estilos APA, Harvard, Vancouver, ISO, etc.

36

Rong, Wang, Ma Lina y K. H. Kuo. "A Metastable Crystalline Phase Coexisted with the Decagonal Quasicrystals in Rapidly Solidified Al-Ir Al-Pd and Al-Pt Alloys". Proceedings, annual meeting, Electron Microscopy Society of America 48, n.º 1 (12 de agosto de 1990): 572–73. http://dx.doi.org/10.1017/s0424820100181622.

Texto completo

Resumen

Up to now, decagonal quasicrystals have been found in the alloys of whole Al-Pt group metals [1,2]. The present paper is concerned with the TEM study of a hitherto unreported hexagonal phase in rapidly solidified Al-Ir, Al-Pd and Al-Pt alloys.The ribbons of Al5Ir, Al5Pd and Al5Pt were obtained by spun-quenching. Specimens cut from the ribbons were ion thinned and examined in a JEM 100CX electron microscope. In both rapidly solidified Al5Ir and Al5Pd alloys, the decagonal quasicrystal, with rosette or dendritic morphologies can be easily identified by its electron diffraction patterns(EDPs). The EDPs of the decagonal phase for the two alloys are quite similar. However, the existance of decagonal quasicrystal in the Al-Pt alloy has not been verified by our TEM study. It is probably for the reason that the cooling rate is not great enough for the Al5Pt alloy to form the decagonal phase. During the TEM study, a metastable hexagonal phase has been observed in the Al5Ir, Al5Pd and Al5Pt alloys. The lattic parameters calculated from the X-ray powder data of this phase are a=1.229 and c=2.647nm(Al-Pd) and a=1.231 and c=2.623nm(Al-Ir). The composition of this phase was determined by EDS analysis as Al4(Ir, Pd or Pt). It coexists with the decagonal phase in the alloys and transformed to other stable crystalline phases on heating to high temperature. A comparison between the EDPs of the hexagonal and the decagonal phase are shown in Fig.l. Fig. 1(a) is the EDPs of the decagonal phase in various orientions and the EDPs of the hexagonal phase are shown in Fig.1(b), in a similar arrangement as Fig.1(a). It can be clearly seen that the EDPs of the hexagonal phase, especially the distribution of strong spots, are quite similar to their partners of the decagonal quasicrystal in Fig.1(a). All the angles, shown in Fig.l, between two corresponding EDPs are very close to each other. All of these seem strongly to point out that a close structural relationshipexists between these two phases:[110]//d10 [001]//d2(D) //d2 (P)The structure of α-AlFeSi is well known [3] and the 54-atom Mackay icosahedron with double icosahedral shells in the α-AlFeSi structure [4] have been used to model the icosahedral quasicrystal structure. Fig.2(a) and (b) show, respectively, the [110] and [001] projections of the crystal structure of α- AlFeSi, and decagon-pentagons can easily be identified in the former and hexagons in the latter. In addition, the optical transforms of these projections show clearly decagons and hexagons of strong spots, quite similar to those in [110] and [001] EDPs in Fig.1(b). This not only proves the Al(Ir, Pt, Pd) metastable phase being icostructural with the α-AlFeSi phase but also explains the orientation relationship mentioned above.

Los estilos APA, Harvard, Vancouver, ISO, etc.

37

Labur, T. M., V. A. Koval y M. R. Yavorska. "Consumable electrode welding of d16 aluminium alloy with weld metal microalloying". Paton Welding Journal 2023, n.º 1 (28 de enero de 2023): 47–54. http://dx.doi.org/10.37434/tpwj2023.01.07.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

38

Глазов, А. Л. y К. Л. Муратиков. "Влияние механических напряжений в пластине из алюминиевого сплава Д16 на генерацию акустических колебаний лазерным излучением". Письма в журнал технической физики 45, n.º 17 (2019): 51. http://dx.doi.org/10.21883/pjtf.2019.17.48226.17892.

Texto completo

Resumen

The process of laser generation of ultrasound in metals with internal mechanical stresses is analyzed. The features of the photoacoustic signal behavior near the hole in the D16 alloy plate when subjected to mechanical stresses are investigated. The discrepancy between the experimental results and the predictions of the thermodynamic model of the dependence of the coefficient of thermal expansion on mechanical stresses has been revealed. To correctly describe the features of the signal behavior in real metals, it was proposed to take into account the effect of the electronic subsystem on the laser generation of acoustic vibrations.

Los estilos APA, Harvard, Vancouver, ISO, etc.

39

Upadhyaya, J. C., D. K. Sharma, D. Prakash y S. C. Upadhyaya. "Three-particle forces in the lattice dynamics of some hexagonal close-packed metals". Canadian Journal of Physics 72, n.º 1-2 (1 de enero de 1994): 61–72. http://dx.doi.org/10.1139/p94-011.

Texto completo

Resumen

A lattice dynamical model is developed by applying the Clark–Gazis–Wallis-type three-particle forces in the hexagonal close-packed (hcp) system. The model is then applied in the study of the phonon dispersion in four hep metals, namely, Be, Tb, Ho, and Lu. The present scheme gives the dynamical matrix element Im D12 (q, 11) to be nonzero and explains the peculiar behaviour of dispersion branches along ΓKM direction in these hep metals. Further more, a single expression for C44 is found and the Cauchy discrepancy (C13-C44) is entirely ascribed to the three-particle forces.

Los estilos APA, Harvard, Vancouver, ISO, etc.

40

TEETER, G. y J. L. ERSKINE. "STUDIES OF CLEAN METAL SURFACE RELAXATION EXPERIMENT–THEORY DISCREPANCIES". Surface Review and Letters 06, n.º 05 (octubre de 1999): 813–17. http://dx.doi.org/10.1142/s0218625x99000846.

Texto completo

Resumen

A series of Low-Energy Electron Diffraction Intensity vs. Voltage (LEED I–V) measurements for Rh(001), W(110) and Ti(0001) have been undertaken in order to help resolve discrepancies between experiment and theory for the surface relaxations of certain transition metals. LEED measurements and analysis indicate the following results for the change of first (d12) and second (d23) interlayer spacings, relative to the bulk interlayer spacing d0: for Rh(001), Δ d12/d0=-1.4± 1.4% and Δ d23/d0=-0.6± 1.4%; for W(110), Δ d12/d0=-3.0± 1.3% and Δ d23/d0=+0.2± 1.3%; and for Ti(0001), Δ d12/d0=-4.9± 1.0% and Δ d23/d0=+1.4± 1.0%. In each case, the new measurements help to resolve the experiment–theory surface relaxation discrepancies. In addition, two of these surfaces [W(110) and Ti(0001)] show substantial contractions in the first interlayer spacing, d12. Large relaxations for close-packed surfaces lend support to the promotion–hybridization picture of surface relaxation put forth recently by P. J. Feibelman [P. J. Feibelman, Phys. Rev.B53, 13740 (1996).] In addition to making new experimental determinations of surface relaxations, a secondary goal of this work is to characterize sources of error associated with LEED I–V methodology that have traditionally not been fully appreciated.

Los estilos APA, Harvard, Vancouver, ISO, etc.

41

Misra, Durga. "Welcome Remarks - D01: Semiconductors, Dielectrics, and Metals for Nanoelectronics and Plasma Nanosciences". ECS Meeting Abstracts MA2020-02, n.º 14 (23 de noviembre de 2020): Open. http://dx.doi.org/10.1149/ma2020-0214openmtgabs.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

42

Snyder, James P. "Die Unterscheidung zwischen d8- und d10-Cu in einem Komplex mit stark ionischem Charakter; eine nichtformale Metall-Oxidationsstufe". Angewandte Chemie 107, n.º 9 (2 de mayo de 1995): 1076–77. http://dx.doi.org/10.1002/ange.19951070908.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

43

Vorob`ev, R. A., S. A. Sorokina y V. V. Evstifeeva. "Phase composition of deformable D16 and B95 aluminium alloys with the quantitative assessment of overburning of different stages of development". Izvestiya Vuzov. Tsvetnaya Metallurgiya (Universities' Proceedings Non-Ferrous Metallurgy), n.º 1 (19 de febrero de 2020): 68–78. http://dx.doi.org/10.17073/0021-3438-2020-1-68-78.

Texto completo

Resumen

This paper covers new overburning monitoring methods for D16 and V95 aluminum alloys based on use of a method of an energydispersive X-ray spectral analysis (EDS analysis). It is known that lowered performance of aluminum-based materials is often connected with overburning in their structure. Because the structural changes caused by overburning (flash-off of eutectics and excess low-melting phases and the subsequent crystallization of melted-off microvolumes) are followed by developing porosity, have negative impact on physical and chemical, mechanical and processing properties. The ability to reveal overburning at early stages allows to reject the defective metal. Characteristics sensitive to an early overburning stage are offered based on EDS analysis. A degree of the induced overburning in a D16 sheet is identified. B95 alloy structural components determining the alloy tendency to overburning are revealed. It is found that the EDS analysis makes it possible to reveal changes in the chemical composition of the structural elements of D16 and V95 aluminum alloys and identify an overburning stage quantitatively based on oxygen content. Overburning development leads not only to the higher content of oxygen in the chemical composition of aluminum alloys, but also lowers the electrical conductivity of the material. The paper considers a correlation relationship between the D16 alloy electrical conductivity with overburning induced in it, and oxygen content. The applicability of this method is caused by the method simplicity and a possibility to quantify the defect development in the heat-strengthened deformable aluminum alloys after process heatings. Also this method can be used as an additional research method when metallographic analysis gives no definite answer at identification of early overburning stages.

Los estilos APA, Harvard, Vancouver, ISO, etc.

44

Глазов, А. Л., Н. Ф. Морозов y К. Л. Муратиков. "Нелинейный фотоакустический отклик на механические напряжения вблизи отверстия в пластине из алюминиевого сплава Д16". Письма в журнал технической физики 46, n.º 4 (2020): 22. http://dx.doi.org/10.21883/pjtf.2020.04.49045.18100.

Texto completo

Resumen

The features of the behavior of the photoacoustic signal depending on mechanical stresses near the hole in the plate made of aluminum alloy D16 are investigated. A new nonlinear photoacoustic effect was discovered, which consists in the appearance of a nonlinear component of the photoacoustic signal depending on mechanical stresses near the hole. This dependence is recorded in the signal at the modulation frequency of the laser radiation. A theoretical description of the discovered effect of sound generation by the thermoelastic mechanism in stressed metals is proposed basing on the consideration of the thermal effect of laser radiation on their electronic subsystem.

Los estilos APA, Harvard, Vancouver, ISO, etc.

45

Moreira, Leonardo Marmo, Alexandre de Oliveira Teixeira y Juliana Pereira Lyon. "Cobre (Cu): Reatividade, compostos de coordenação e atuação biológica". Research, Society and Development 13, n.º 3 (16 de marzo de 2024): e5313345291. http://dx.doi.org/10.33448/rsd-v13i3.45291.

Texto completo

Resumen

O cobre (Cu) é um dos metais mais utilizados pelo ser humano e seu emprego, nas mais diversas aplicações, remonta a priscas eras. Apresentando uma versatilidade redox relativamente alta (mais do que três (3) estados de oxidação possíveis com significativa estabilidade: Cu(I); Cu(II); Cu(III); e Cu(IV)), é encontrado, principalmente, nos estados de oxidação +1 (íon cuproso, Cu(I)) e +2 (íon cúprico, Cu(II)). O cobre (Cu) apresenta uma química de coordenação extremamente rica e variada, a começar pelas significativas diferenças encontradas nas geometrias possíveis para os seus respectivos complexos metálicos. Cu(I) apresenta uma configuração eletrônica d10, enquanto Cu(II) possui uma configuração d9 e Cu(III) constitui uma configuração d8. Estas três (3) configurações eletrônicas distintas representam predisposições a geometrias de complexos metálicos diferenciadas (tetraédrica, octaédrica distorcida e quadrática planar, respectivamente). Destaca-se, igualmente, por ser um dos principais metais de transição no meio biológico, com especial atuação em sítios ativos de altamente relevantes metaloproteínas, tais como as hemocianinas e as proteínas azuis de cobre (Cu). O objetivo deste trabalho é apresentar um estudo introdutório à química do cobre (Cu), como especial atenção à sua química bioinorgânica, sobretudo a relação estrutura-função das metaloproteínas de cobre (Cu), através de “Revisão Narrativa de Literatura”. Assim sendo, este artigo apresenta a química do cobre (Cu), partindo das propriedades fundamentais deste elemento, passando pelas características do Cu como centro de coordenação e culminando com relevantes exemplos da atuação do Cu no meio biológico, em especial, atuando como sítio ativo de proteínas.

Los estilos APA, Harvard, Vancouver, ISO, etc.

46

Löwensprung, Natalie Rosenhauer-von. "Zwischen Planet und Mensch". Deutsche Heilpraktiker-Zeitschrift 18, n.º 08 (diciembre de 2023): 46–52. http://dx.doi.org/10.1055/a-2116-0150.

Texto completo

Resumen

SummaryAus Sicht der Anthroposophischen Medizin modulieren Metallkräfte über die Bewusstseinsebene der Ich-Organisation die Seelenorganisation, vermitteln zwischen Planet und Mensch und wirken auf alle Wesensglieder. Während das Saturnelement Blei zum Beispiel Strukturierung und Begrenzung und das Mondelement Silber Reflexion, Aufbau und Regeneration vermittelt, steht Zinn (Jupiter) für plastische Formbildung und Eisen (Mars) für Lebensenergie und Dynamik. Bei zu schwachen, dem jeweiligen Metall zugeordneten Prozessen wählt man meist niedrigere Potenzen (vorwiegend D3–10), während bei übersteigerten Prozessen überwiegend Verdünnungen im Bereich von D12–30 zur Anwendung kommen.

Los estilos APA, Harvard, Vancouver, ISO, etc.

47

Chernyshova, T. A. y L. I. Kobeleva. "Aging processes in precipitation-hardening composite materials based on a D16 aluminum alloy". Russian Metallurgy (Metally) 2010, n.º 9 (septiembre de 2010): 800–809. http://dx.doi.org/10.1134/s0036029510090089.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

48

Markushev, M. V., E. A. Avtokratova, R. R. Ilyasov, S. V. Krymskiy y O. Sh Sitdikov. "Effect of Aging on the Nanostructuring and Strength of a D16 Aluminum Alloy". Russian Metallurgy (Metally) 2018, n.º 10 (octubre de 2018): 980–84. http://dx.doi.org/10.1134/s0036029518100130.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

49

KUZINA, E. A., F. SH OMRAN, A. M. EMELYANENKO y L. B. BOINOVICH. "ON THE SIGNIFICANCE OF SELECTING HYDROPHOBIZATION CONDITIONS FOR OBTAINING STABLE SUPERHYDROPHOBIC COATINGS". Коллоидный журнал 85, n.º 1 (1 de enero de 2023): 63–70. http://dx.doi.org/10.31857/s0023291222600614.

Texto completo

Resumen

A method has been described for obtaining superhydrophobic coatings on the surfaces of tungsten and D16 aluminum alloy using nanosecond laser treatment followed by chemical deposition of fluorooxysilane from a vaporous phase. It has been shown by the examples of aluminum and tungsten that, in order to obtain chemically stable coatings, it is necessary to select sample preparation conditions for applying the hydrophobizer individually for each material. Varying the time of surface pretreatment with oxygen plasma makes it possible to controllably change the density of surface adsorption sites and control the chemical stability of the hydrophobizer layer and, hence, the coating as a whole. Superhydrophobic coatings with contact angles of larger than 170° have been obtained on the studied metals, with contact angles remaining preserved during a long-term continuous contact with aqueous media.

Los estilos APA, Harvard, Vancouver, ISO, etc.

50

Antipin, V. P. y R. V. Tyul’pakova. "Hydrogen redistribution in aluminum alloy D16 and AK4-1 rods induced by internal stresses". Russian Metallurgy (Metally) 2011, n.º 1 (enero de 2011): 60–65. http://dx.doi.org/10.1134/s0036029511010022.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Ofrecemos descuentos en todos los planes premium para autores cuyas obras están incluidas en selecciones literarias temáticas. ¡Contáctenos para obtener un código promocional único!