Log in

Relevant bibliographies by topics / Anionic; Ligands

Contents

Journal articles
Dissertations / Theses
Book chapters
Conference papers
Reports

Academic literature on the topic 'Anionic; Ligands'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Anionic; Ligands.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Anionic; Ligands"

1

Brennessel, William W., and John E. Ellis. "Crystal structure of (18-crown-6)potassium(I) [(1,2,3,4,5-η)-cycloheptadienyl][(1,2,3-η)-cycloheptatrienyl]cobalt(I)." Acta Crystallographica Section E Crystallographic Communications 71, no. 3 (February 21, 2015): 291–95. http://dx.doi.org/10.1107/s2056989015003151.

Full text

Abstract:

The reaction of bis(anthracene)cobaltate(−I) with excess cycloheptatriene, C7H8, resulted in a new 18-electron cobaltate containing two different seven-membered ring ligands, based on single-crystal X-ray diffraction. The asymmetric unit of this structure contains two independent cation–anion pairs of the title complex, [K(18-crown-6)][Co(η3-C7H7)(η5-C7H9)], where 18-crown-6 stands for 1,4,7,10,13,16-hexaoxacyclooctadecane (C12H24O6), in general positions and well separated. Each (18-crown-6)potassium cation is in contact with the η3-coordinating ligand of one cobaltate complex. Each η3-coordinating ligand behaves as an allylic anion whoseexo-diene moiety is bent away from the allylic plane, and thus is not involved directly in the bonding. The metal-coordinating portions of the anionic η5ligands are planar and one of these ligands is modeled as disordered over two positions, with occupancy ratio 0.699 (5):0.301 (5), such that one orientation is rotated by one carbon atom with respect to the other. The diffraction intensities were integrated according to non-merohedral twin law [-1 0 0/0 -1 0/0.064 0 1], a 180° rotation about reciprocal lattice axis [001], and the masses of the twin domains refined to equal amounts. As both ligands are formally coordinated as anions, the cobalt atom is best considered to be CoI. This compound is of interest as the first to possess cycloheptatrienyl and cycloheptadienyl ligands in an anionic metal complex.

APA, Harvard, Vancouver, ISO, and other styles

2

Ha, Kwang. "Bis(acetato-κO)(di-2-pyridylamine-κ2N2,N2′)palladium(II)." Acta Crystallographica Section E Structure Reports Online 68, no. 4 (March 31, 2012): m502. http://dx.doi.org/10.1107/s1600536812012093.

Full text

Abstract:

In the title complex, [Pd(CH3COO)2(C10H9N3)], the PdIIion is four-coordinated in a slightly distorted square-planar environment by two pyridine N atoms of the chelating di-2-pyridylamine (dpa) ligand and two O atoms from two anionic acetate ligands. The dpa ligand coordinates the PdIIatom in a boat conformation of the resulting chelate ring; the dihedral angle between the pyridine rings is 39.3 (2)°. The two acetate anions coordinate the PdIIatom as monodentate ligands and are located on the same sides of the PdN2O2unit plane. The carboxylate groups of the anionic ligands appear to be delocalized on the basis of the C—O bond lengths. Two complex molecules are assembled through intermolecular N—H...O hydrogen bonds, forming a dimer-type species. Intermolecular C—H...O hydrogen bonds further stabilize the crystal structure.

APA, Harvard, Vancouver, ISO, and other styles

3

Melgar, Dolores, Nuno A. G. Bandeira, Josep Bonet Avalos, and Carles Bo. "Anions coordinating anions: analysis of the interaction between anionic Keplerate nanocapsules and their anionic ligands." Physical Chemistry Chemical Physics 19, no. 7 (2017): 5343–50. http://dx.doi.org/10.1039/c6cp08511c.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Han, Li-Juan, and Ya-Jie Kong. "Poly[(μ-pentafluorobenzoato-κ2O:O′)(pentafluorobenzoato-κO)(μ-pyrazine-κ2N:N′)copper(II)]: a coordination polymer linked into a three-dimensional network by intermolecular C—H...F—C interactions." Acta Crystallographica Section C Structural Chemistry 70, no. 11 (October 7, 2014): 1017–20. http://dx.doi.org/10.1107/s2053229614021536.

Full text

Abstract:

In the title compound, [Cu(C6F5COO)2(C4H4N2)]n, (I), the asymmetric unit contains one CuIIcation, two anionic pentafluorobenzoate ligands and one pyrazine ligand. Each CuIIcentre is five-coordinated by three O atoms from three independent pentafluorobenzoate anions, as well as by two N atoms from two pyrazine ligands, giving rise to an approximately square-pyramidal coordination geometry. Adjacent CuIIcations are bridged by a pyrazine ligand and two pentafluorobenzoate anions to give a two-dimensional layer. The layers are stacked to generate a three-dimensional supramolecular architectureviastrong intermolecular C—H...F—C interactions, as indicated by the F...H distance of 2.38 Å.

APA, Harvard, Vancouver, ISO, and other styles

5

Neumann, Tristan, Inke Jess, and Christian Näther. "Crystal structure ofcatena-poly[[[bis(pyridine-4-carbothioamide-κN1)cadmium]-di-μ-thiocyanato-κ2N:S;κ2S:N] methanol disolvate]." Acta Crystallographica Section E Crystallographic Communications 72, no. 3 (February 20, 2016): 370–73. http://dx.doi.org/10.1107/s2056989016002632.

Full text

Abstract:

The asymmetric unit of the polymeric title compound, {[Cd(NCS)2(C6H6N2S)]·2CH3OH}n, consists of one cadmium(II) cation that is located on a centre of inversion as well as one thiocyanate anion, one pyridine-4-carbothioamide ligand and one methanol molecule in general positions. The CdIIcations are octahedrally coordinated by the pyridine N atom of two pyridine-4-carbothioamide ligands and by the S and N atoms of four thiocyanate anions and are linked into chains along [010] by pairs of anionic ligands. These chains are further linked into layers extending along (201) by intermolecular N—H...O and O—H...S hydrogen bonds. One of the amino H atoms of the pyridine-4-carbothioamide ligand is hydrogen-bonded to the O atom of a methanol molecule, and a symmetry-related methanol molecule is the donor group to the S atom of another pyridine-4-carbothioamide ligand whereby each of the pyridine-4-carbothioamide ligands forms two pairs of centrosymmetric N—H...S and O—H...S hydrogen bonds. The methanol molecules are equally disordered over two orientations.

APA, Harvard, Vancouver, ISO, and other styles

6

Aly, Aref A. M., and Asma I. El-Said. "Spectral and Thermal Studies on Some New Anionic Mixed Alkyldithiocarbonato-Oxinato Transition Metal Complexes." Zeitschrift für Naturforschung B 44, no. 3 (March 1, 1989): 323–26. http://dx.doi.org/10.1515/znb-1989-0313.

Full text

Abstract:

The preparation and characterization of some anionic mixed ligand com plexes of Co(II), Ni(II) and Cu(II) containing the two anionic ligands alkyldithiocarbonate and oxinate are reported. The ionic nature of the complexes was inferred from the conductivity data. Alkyldithiocarbonates act in these complexes as bidentate ligands. Based on the spectroscopic and magnetic data the complexes appear to possess pseudo-octahedral metal coordination.

APA, Harvard, Vancouver, ISO, and other styles

7

Lu, Yang, Wei-Qiang Liao, and Xiu-Ni Hua. "A new two-dimensional polymeric cadmium(II) complex containing dicyanamide bridging ligands." Acta Crystallographica Section C Structural Chemistry 73, no. 11 (October 6, 2017): 885–88. http://dx.doi.org/10.1107/s2053229617013614.

Full text

Abstract:

As part of an exploration of new coordination polymers, a cadmium-dicyanamide complex, namely poly[benzyltriethylammonium [tri-μ-dicyanamido-κ6 N 1:N 5-cadmium(II)]], {(C13H22N)[Cd(C2N3)3]} n , has been synthesized by the reaction of benzyltriethylammonium bromide, cadmium nitrate tetrahydrate and sodium dicyanamide in aqueous solution, and characterized by single-crystal X-ray diffraction at room temperature. In the crystal structure, each CdII cation is coordinated by six nitrile N atoms from six anionic dicyanamide (dca) ligands to furnish a slightly distorted octahedral geometry. Neighbouring CdII cations are linked by dicyanamide bridges to construct a two-dimensional anionic layer coordination polymer. One amide N atom in the bridging dca ligand is disordered over two sites. The cations lie between the anionic frameworks and there are no hydrogen-bond interactions between the cations and anions. The organic cations are not involved in the formation of the supramolecular network.

APA, Harvard, Vancouver, ISO, and other styles

8

Fisher, Steven P., Anton W. Tomich, Juchen Guo, and Vincent Lavallo. "Teaching an old dog new tricks: new directions in fundamental and applied closo-carborane anion chemistry." Chemical Communications 55, no. 12 (2019): 1684–701. http://dx.doi.org/10.1039/c8cc09663e.

Full text

Abstract:

In this feature article we cover new directions in the fundamental and applied chemistry of the closo-carborane anions [HCB₁₁H₁₁]⁻¹ and [HCB₉H₉]⁻¹, including energy storage applications, ionic liquids, anionic carborane fused heterocycles/radicals, ligand substituents, and ligands for catalysis and coordination chemistry.

APA, Harvard, Vancouver, ISO, and other styles

9

Buvaylo, Elena A., Vladimir N. Kokozay, Olga Yu Vassilyeva, and Brian W. Skelton. "Bis{2-[(pyridin-2-yl)methylideneamino]benzoato-κ3N,N′,O}chromium(III) nitrate monohydrate." Acta Crystallographica Section E Structure Reports Online 70, no. 4 (March 15, 2014): m136. http://dx.doi.org/10.1107/s1600536814005649.

Full text

Abstract:

The title complex salt hydrate, [Cr(C13H9N2O2)2]NO3·H2O, comprises discrete cations, nitrate anions and solvent water molecules. The CrIIIatom is octahedrally coordinated by two anionic Schiff base ligands with the O atoms beingcis. The two ligands differ significantly with dihedral angles between the pyridine and benzene rings of 4.8 (2) and 24.9 (2)°. The nitrate anion and solvent water molecule were modelled as being disordered, with the major components having site-occupancy values of 0.856 (14) and 0.727 (16), respectively. The crystal is built of alternating layers of cations and of anions plus water molecules, stacked along thecaxis.

APA, Harvard, Vancouver, ISO, and other styles

10

Nicolas, Emmanuel, Thibault Cheisson, G. Bas de Jong, Cornelis G. J. Tazelaar, and J. Chris Slootweg. "A new synthetic route to the electron-deficient ligand tris(3,4,5-tribromopyrazol-1-yl)phosphine oxide." Acta Crystallographica Section C Structural Chemistry 72, no. 11 (October 5, 2016): 846–49. http://dx.doi.org/10.1107/s2053229616015035.

Full text

Abstract:

The anionic tris(pyrazolyl)borates, or scorpionates, have proven to be extremely useful ligands. Neutral tris(pyrazolyl)methane ligands, however, are difficult to prepare and require numerous purification steps for a number of substitution patterns. We have previously outlined two different routes for accessing neutral tris(pyrazolyl) ligands. We describe here an adaptation of the previously published procedures for the synthesis of the electron-poor ligand tris(3,4,5-tribromopyrazol-1-yl)phosphine oxide, C9Br9N6OP. Similar electron-deficient ligands have been proven to unlock unique chemistry for the anionic scorpionates. The title perbrominated tris(pyrazolyl)phosphine oxide displays a network of halogen bonds in the solid state. All the bonds in the pyrazole ring are rather similar to the reported borate analogues, which makes this molecule promising as a ligand for applications where very electron-poor metal complexes are required.

APA, Harvard, Vancouver, ISO, and other styles

More sources

Dissertations / Theses on the topic "Anionic; Ligands"

1

Dubberley, Stuart R. "New calix[4]arene metal complexes." Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365290.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Neshat, Abdollah. "Group V Imido Complexes Bearing Mono-Anionic Acetophenone Imine Ligands." University of Toledo / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1302269375.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

梁華雄 and Wa-hung Leung. "Oxidation chemistry of ruthenium and manganese complexes of multi-anionic chelating ligands." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1989. http://hub.hku.hk/bib/B31231627.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Leung, Wa-hung. "Oxidation chemistry of ruthenium and manganese complexes of multi-anionic chelating ligands /." [Hong Kong : University of Hong Kong], 1989. http://sunzi.lib.hku.hk/hkuto/record.jsp?B12355197.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Clevenger, Margo. "Synthetic Routes to 3-Fold Symmetric Tridentate Oxygen Donor Ligands." Thesis, Virginia Tech, 1997. http://hdl.handle.net/10919/36964.

Full text

Abstract:

The class of ligands represented by [CpCo(P(O)(OR)2)3]-, L- , were first synthesized by W. KlÃ¤ui in 1977. These ligands have been found to coordinate to a variety of low and high oxidation state metals through the use of its three P=O oxygen atoms as donors. The ligands act as mono-anionic six electron donors which make them similar to the more widely known cyclopentadienyl ligands, (C5H5-xRx)-, but have electronic properties like those of fluoride or oxide. Also, it has been found that the coordination chemistry of L- resembles the unsubstituted tris(pryrazolyl)hydroborato six electron ligand, (RB(pz)3)-. All three of these ligands can be modified by changing the substituent R. The KlÃ¤ui ligand offers a good opportunity to synthesize a chiral derivative. In the process to obtain the chiral version, (cyclopentadienyl)tris(biphenyl-phosphito-P)cobaltate(1-), 18, was synthesized from 2,2'-biphenol. This was characterized through NMR, mass spectroscopy, and XPS. Next, a racemic version, (cyclopentadienyl)tris(biphenylphosphito-P)cobaltate(1-), 17, was synthesized from (Â±)1,1â -bi-2-naphthol. A one-pot synthesis for the rac-binaphthyl phosphite derivative was developed with an increased yield from the previously published synthesis. The racemic version of the ligand was characterized by NMR and mass spectroscopy. The chiral version has not yet been synthesized, however, by following the developed procedure for the non-chiral version, the ligand could be synthesized from optically active 1,1'-bi-2-naphthol.
Master of Science

APA, Harvard, Vancouver, ISO, and other styles

6

Chan, Siu-chung, and 陳兆聰. "Photoluminescent and electroluminescent properties of neutral platinum(II) complexes containing alkynyl and multi-anionic ligands." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B31245171.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Alliger, Glen E. (Glen Edward). "Synthesis and investigation of hexacarboxamide cryptands as anionic binucleating ligands by Glen E. Alliger." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/62100.

Full text

Abstract:

Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 2010.
Vita. Cataloged from PDF version of thesis.
Includes bibliographical references.
We have investigated the use of hexacarboxamide cryptands as sextuply anionic binucleating ligands. Two homobimetallic complexes of a t-butyl-substituted cryptand, featuring manganese(II) ion and cobalt(II) ions, have been synthesized. The manganese species features a bridging hydroxide ligand; both of these species have been structurally characterized, though complete characterization was not possible due to the compounds' impurity. A highly soluble hexacarboxamide cryptand, featuring dipropoxyphenoxyl substituents, was synthesized for the first time, and has been structurally characterized. The structure features a two-dimensional hydrogen bonding network, resulting in infinite sheets of cryptand units. We have synthesized a dicobalt(II) complex of this ligand. This compound features the metal centers in cofacial trigonal monopyramidal geometries, with an intermetallic distance in excess of 6 A. This marks the first time that such a species has been fully characterized. Despite the void between the metal centers, elucidation of constructive reactivity was a challenge, though insertion of cyanide under forcing conditions was achieved. This dicobalt(II) p-cyano complex was also structurally characterized. Using the methodology set forth for the synthesis of the dicobalt(II) complex of the soluble cryptand, we have synthesized a series of complexes of this ligand, featuring manganese(II), iron(II), nickel(II), and zinc(II). These compounds were structurally characterized, and were found to be isomorphous with the dicobalt(II) complex. A comparison of the structures is drawn. These compounds have also been characterized by a variety of methods, including SQuID magnetometry, cyclic voltammetry, EPR, and, in the case of the diiron complex, Mbssbauer spectroscopy. Also reported is work toward a diiron(III) complex; the M6ssbauer spectrum of this species is reported. In analogy to the pt-cyano complex of the dicobalt complex above, a p-cyano complex of the diiron(II) was synthesized and structurally characterized. Investigations into the utility of the initial t-butyl substituted cryptand as a ligand have also been made. Initial results indicate that monometalation of this ligand is possible, and treatment of a putative monocobalt(II) complex with tetrabutylammonium cyanide suggests that the cyanide-bound product is in equilibrium with the free complex.
Ph.D.

APA, Harvard, Vancouver, ISO, and other styles

8

Avedis, Ani. "A high-throughput method for screening of protein binding behavior of multimodal anionic exchange ligands." Thesis, Uppsala universitet, Analytisk farmaceutisk kemi, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-434809.

Full text

Abstract:

The biopharmaceutical industry is constantly developing biological drugs, resulting in increased levels of product related impurities having similar characteristics as the target. The aim of the ligand project was to address future challenging purifications by developing new ligands for future resins for the biopharmaceutical industry. The purpose of this study was to develop a high-throughput screening method and use it to compare 15 novel multimodal anionic exchange ligand analogues with two reference ligands, for future polishing steps in the downstream process. The protein binding behavior of the ligands were studied with alkaline phosphatase, human serum albumin, α-chymotrypsinogen A and a monoclonal antibody as model proteins, at various pH values and salt concentrations. The selection process of the model proteins was based on stability studies, a study of their adsorption to the 96 well plate, and their binding behavior on three of the ligand analogues and one reference ligand. The percent protein bound to the ligands at the various conditions was calculated and presented in plots in order to study their binding behaviors. The calculated values were also used in order to evaluate the results in principal component analysis, creating chromatographic diversity maps. The maps were used to get an overview of the differences and similarities of the ligand analogues compared to the reference resins, which can be used for selecting ligands for future research and biomanufacturing. Four analogues and one reference ligand were also studied in a column format where different gradients were used, which confirmed the obtained results in the plate experiments.

APA, Harvard, Vancouver, ISO, and other styles

9

Dyke, Alan. "Novel Câ‚‚-symmetric N,N-donor ligands and the anionic thia-Fries rearrangement of aryl triflates." Thesis, University of Bristol, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.404435.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

高寶鴻 and Po-hung Ko. "Syntheses, structures and reactivities of some ruthenium, manganese and osmium complexes of non-porphyrin chelating multi-anionic ligands." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1997. http://hub.hku.hk/bib/B31235906.

Full text

APA, Harvard, Vancouver, ISO, and other styles

More sources

Book chapters on the topic "Anionic; Ligands"

1

Melen, Rebecca L., and Lutz H. Gade. "New Chemistry with Anionic NNN Pincer Ligands." In The Privileged Pincer-Metal Platform: Coordination Chemistry & Applications, 179–208. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/3418_2015_114.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Nagy, Sandor M., Mark P. Mack, and Gregory G. Hlatky. "Modeling and Catalytic Performance of Group 4 Metal Complexes with Anionic Heteroatomic Ligands." In ACS Symposium Series, 76–85. Washington, DC: American Chemical Society, 2003. http://dx.doi.org/10.1021/bk-2003-0857.ch006.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Štalc, Anton, Zoran Grubič, Marjeta Šentjurc, Slavko Pečar, Mary K. Gentry, and Bhupendra P. Doctor. "Alterations in the Topography of Acetylcholinesterase Active Site Gorge after Binding of Peripheral Anionic Site Ligands." In Enzymes of the Cholinesterase Family, 125–26. Boston, MA: Springer US, 1995. http://dx.doi.org/10.1007/978-1-4899-1051-6_25.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Cámpora, Juan, and Cristóbal Melero. "The Role of Redox Processes in Reactions Catalyzed by Nickel and Palladium Complexes with Anionic Pincer Ligands." In Pincer and Pincer-Type Complexes, 31–70. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2014. http://dx.doi.org/10.1002/9783527681303.ch2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Pawar, M. S., Y. Zha, M. L. Disabb-Miller, Z. D. Johnson, M. A. Hickner, and G. N. Tew. "Metal-Ligand Based Anion Exchange Membranes." In ACS Symposium Series, 127–46. Washington, DC: American Chemical Society, 2014. http://dx.doi.org/10.1021/bk-2014-1161.ch006.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Beer, Paul D. "Transition Metal Redox Active Ligand Systems for Recognising Cationic and Anionic Guest Species." In Transition Metals in Supramolecular Chemistry, 33–54. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-015-8380-0_2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Fabbrizzi, L., M. Licchelli, P. Pallavicini, L. Parodi, A. Poggi, and A. Taglietti. "Anion Sensing Based on the Metal-Ligand Interaction." In Physical Supramolecular Chemistry, 433–48. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-0317-3_26.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Zhu, Yuewei, Arup K. Sengupta, and Anuradha Ramana. "Selective and Reversible Sorption of Target Anions by Ligand Exchange." In Ion Exchange Advances, 287–94. Dordrecht: Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2864-3_38.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Illingsworth, M. L., and J. L. Burmeister. "From Organic Nitrogen Anions or their Metallo Derivatives by Metathesis with Transition-Metal Ligands." In Inorganic Reactions and Methods, 136–41. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145227.ch104.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Kargol, J. A., J. A. Albanese, and J. L. Burmeister. "From Organic Nitrogen Anions by Ligand Substitution Reactions with Complexes of the Metals." In Inorganic Reactions and Methods, 51–54. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145227.ch32.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Anionic; Ligands"

1

Gojić, Mirko, Mirjana Metikoš-Huković, and Ranko Babić. "Investigation of the Passivity, Hydrogen Embrittlement and Threshold Stress of Duplex Stainless Steel." In 1996 1st International Pipeline Conference. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/ipc1996-1858.

Full text

Abstract:

The electrochemical behavior of duplex stainless steel has been studied in various environments. Its passivity state was investigated in borate-buffer using cyclic voltammetry and impedance spectroscopy techniques. The susceptibility towards sulfide stress cracking and hydrogen embrittlement were tested at a constant load under cathodic polarization in the NACE solution saturated with H2S and 0.5 M sulfuric acid solution containing As203 as a promoter. SEM analysis accompanied these investigations. It is proposed that the highly protective quality of the passive film formed on the investigated duplex stainless steel may be associated with the presence of multiple oxidation states (Cr3+ and Cr6+) formed in the solid state along with (CrO42- and MoO42-) anions and the great variety of possible bridging ligand states (OH−, H2O, O2−). This leads to a significant degree of bonding flexibility and supports amorphous i.e. glassy structure of the passive film. Therefore, the stresses that would be associated with epitaxy, are easily alleviated without the creation of long-range defect structures. The investigated duplex stainless steel shows high resistance to hydrogen embrittlement and sulfide stress cracking. The embrittlement index was determined to be 26%, while the threshold stress amounts to 84% of the yield strength.

APA, Harvard, Vancouver, ISO, and other styles

2

Laukhin, V. N., N. D. Kushch, L. I. Buravov, A. G. Khomenko, E. B. Yagubskii, H. Rakoto, J. M. Broto, et al. "Structure and transport properties of the first et salt with metal complex anion containing selenocyanate ligand, (ET)/sub 2/TlHg(SeCN)/sub 4/." In International Conference on Science and Technology of Synthetic Metals. IEEE, 1994. http://dx.doi.org/10.1109/stsm.1994.834950.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Paviet-Hartmann, Patricia, Amber Wright, Edward Mausolf, Keri Campbell, and Frederic Poineau. "Application of Formohydroxamic Acid in Nuclear Processing: Synthesis and Complexation With Technetium-99." In 18th International Conference on Nuclear Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/icone18-29028.

Full text

Abstract:

Acetohydroxamic acid (AHA) is an organic ligand planned for use in the Uranium Extraction (UREX) process. It reduces neptunium and plutonium, and the resultant hydrophilic complexes are separated from uranium by extraction with tributyl phosphate (TBP) in a hydrocarbon diluent. AHA undergoes hydrolysis to acetic acid which will impede the recycling of nitric acid. During recent discussions of the UREX process, it has been proposed to replace AHA by formohydroxamic acid (FHA). FHA will undergo hydrolysis to formic acid which is volatile, thus allowing the recycling of nitric acid. The reported reduction potentials of AHA and pertechnetate (TcO4−) indicated that it may be possible for AHA to reduce technetium, altering its fate in the fuel cycle. At UNLV, it has been demonstrated that TcO4− undergoes reductive nitrosylation by AHA under a variety of conditions. The resulting divalent technetium is complexed by AHA to form the pseudo-octahedral trans-aquonitrosyl (diacetohydroxamic)-technetium(II) complex ([TcII(NO)(AHA)2H2O]+). In this paper, we are reporting the synthesis of FHA and its complex formation with technetium along with the characterization of FHA crystals achieved by NMR and IR spectroscopy. Two experiments were conducted to investigate the complexation of FHA with Tc and the results were compared with previous data on AHA. The first experiment involved the elution of Tc from a Reillex HP anion exchange resin, and the second one monitored the complexation of technetium with FHA by UV-visible spectrophotometry.

APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Anionic; Ligands"

1

Wallace, Kevin C., Andy H. Liu, John C. Dewan, and Richard R. Schrock. Preparation and Reactions of Tantalum Alkylidene Complexes Containing Bulky Phenoxide or Thiolate Ligands. Controlling Ring-Opening Metathesis Polymerization Activity and Mechanism Through Choice of Anionic Ligand. Fort Belvoir, VA: Defense Technical Information Center, July 1988. http://dx.doi.org/10.21236/ada198293.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Scamehorn, John F., Richard W. Taylor, and Cynthia E. Palmer. Removal of Radioactive Cations and Anions from Polluted Water using Ligand-Modified Colloid-Enhanced Ultrafiltration. Office of Scientific and Technical Information (OSTI), December 2001. http://dx.doi.org/10.2172/789796.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Scamehorn, John F., Cynthia E. Palmer, and Richard W. Taylor. Removal of Radioactive Cations and Anions from Polluted Water Using Ligand-Modified Colloid-Enhanced Ultrafiltration. Office of Scientific and Technical Information (OSTI), June 1999. http://dx.doi.org/10.2172/828491.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Scamehorn, John F., Richard W. Taylor, and Cynthia E. Palmer. Removal of Radioactive Cations Anions from Polluted Water Using Ligand-Modified Colloid-Enhanced Ultrafiltration (60041-OK). Office of Scientific and Technical Information (OSTI), June 2000. http://dx.doi.org/10.2172/828493.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Scamehorn, J. F., C. E. Palmer, and R. W. Taylor. Removal of radioactive cations and anions from polluted water using ligand-modified colloid-enhanced ultrafiltration. 1998 annual progress report. Office of Scientific and Technical Information (OSTI), June 1998. http://dx.doi.org/10.2172/13751.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!